Delaware Administrative Code
Title 2 - Transportation
2000 - Department of Transportation
2400 - Division of Transportation Solutions
2402 - Manual on Uniform Traffic Control Devices (MUTCD)
Part 1 - General
Chapter 1A - GENERAL
Section 1A.13 - Definitions of Headings, Words, and Phrases in this Manual
Universal Citation: 2 DE Admin Code 1A.13
Current through Register Vol. 28, No. 3, September 1, 2024
Standard:
01 (DE Revision) When used in this Manual, the text headings of Standard, Guidance, Option, and Support shall be defined as follows:
A. Standard-a statement of required,
mandatory, or specifically prohibitive practice regarding a traffic control
device. All Standard statements are labeled, and the text appears in bold type.
The verb "shall" is typically used. The verbs "should" and "may" are not used
in Standard statements. Standard statements are sometimes modified by
Options.
B. Guidance-a statement of
recommended, but not mandatory, practice in typical situations, with deviations
allowed if engineering judgment or engineering study indicates the deviation to
be appropriate. All Guidance statements are labeled, and the text appears in
unbold type. The verb "should" is typically used. The verbs "shall" and "may"
are not used in Guidance statements. Guidance statements are sometimes modified
by Options.
C. Option-a statement
of practice that is a permissive condition and carries no requirement or
recommendation. Option statements sometime contain allowable modifications to a
Standard or Guidance statement. All Option statements are labeled, and the text
appears in unbold type. The verb "may" is typically used. The verbs "shall" and
"should" are not used in Option statements.
D. Support-an informational statement that
does not convey any degree of mandate, recommendation, authorization,
prohibition, or enforceable condition. Support statements are labeled, and the
text appears in unbold type. The verbs "shall," "should," and "may" are not
used in Support statements.
02 Unless otherwise defined in this Section, or in other Parts of this Manual, words or phrases shall have the meaning(s) as defined in the most recent editions of the "Uniform Vehicle Code," "AASHTO Transportation Glossary (Highway Definitions)," and other publications mentioned in Section 1A.11.
03 (DE Revision) The following words and phrases, when used in this Manual, shall have the following meanings:
1. Accessible
Pedestrian Signal-a device that communicates information about pedestrian
signal timing in non-visual format such as audible tones, speech messages,
and/or vibrating surfaces.
2.
Accessible Pedestrian Signal Detector-a device designated to assist the
pedestrian who has visual or physical disabilities in activating the pedestrian
phase.
3. Active Grade Crossing
Warning System-the flashing-light signals, with or without warning gates,
together with the necessary control equipment used to inform road users of the
approach or presence of rail traffic at grade crossings.
4. Actuated Operation-a type of traffic
control signal operation in which some or all signal phases are operated on the
basis of actuation.
5.
Actuation-initiation of a change in or extension of a traffic signal phase
through the operation of any type of detector.
6. Advance Preemption-the notification of
approaching rail traffic that is forwarded to the highway traffic signal
controller unit or assembly by the railroad or light rail transit equipment in
advance of the activation of the railroad or light rail transit warning
devices.
7. Advance Preemption
Time-the period of time that is the difference between the required maximum
highway traffic signal preemption time and the activation of the railroad or
light rail transit warning devices.
8. Advisory Speed-a recommended speed for all
vehicles operating on a section of highway and based on the highway design,
operating characteristics, and conditions.
9. Alley-a street or highway intended to
provide access to the rear or side of lots or buildings in urban areas and not
intended for the purpose of through vehicular traffic.
10. Altered Speed Zone-a speed limit, other
than a statutory speed limit, that is based upon an engineering
study.
11. Approach-all lanes of
traffic moving toward an intersection or a midblock location from one
direction, including any adjacent parking lane(s).
12. Arterial Highway (Street)-a general term
denoting a highway primarily used by through traffic, usually on a continuous
route or a highway designated as part of an arterial system.
13. Attended Lane (Manual Lane)-a toll lane
adjacent to a toll booth occupied by a human toll collector who makes change,
issues receipts, and perform other toll-related functions. Attended lanes at
toll plazas typically require vehicles to stop to pay the toll.
14. Automatic Lane-see Exact Change
Lane.
15. Average Annual Daily
Traffic (AADT)-the total volume of traffic passing a point or segment of a
highway facility in both directions for one year divided by the number of days
in the year. Normally, periodic daily traffic volumes are adjusted for hours of
the day counted, days of the week, and seasons of the year to arrive at average
annual daily traffic.
16. Average
Daily Traffic (ADT)-the average 24 hour volume, being the total volume during a
stated period divided by the number of days in that period. Normally, this
would be periodic daily traffic volumes over several days, not adjusted for
days of the week or seasons of the year.
17. Average Day-a day representing traffic
volumes normally and repeatedly found at a location, typically a weekday when
volumes are influenced by employment or a weekend day when volumes are
influenced by entertainment or recreation.
18. Backplate-see Signal Backplate.
19. Barrier-Separated Lane-a preferential
lane or other special purpose lane that is separated from the adjacent
general-purpose lane(s) by a physical barrier.
20. Beacon-a highway traffic signal with one
or more signal sections that operates in a flashing mode.
21. Bicycle-a pedal-powered vehicle upon
which the human operator sits.
21a. Bicycle
Box-a designated area on the approach to a signalized intersection, between an
advance motorist stop line and the crosswalk or intersection, intended to
provide bicyclists a visible place to wait in front of stopped motorists during
the red signal phase.
22.
Bicycle Facilities-a general term denoting improvements and provisions that
accommodate or encourage bicycling, including parking and storage facilities,
and shared roadways not specifically defined for bicycle use.
23. Bicycle Lane-a portion of a roadway that
has been designated for preferential or exclusive use by bicyclists by pavement
markings and, if used, signs.
24.
Bikeway-a generic term for any road, street, path, or way that in some manner
is specifically designated for bicycle travel, regardless of whether such
facilities are designated for the exclusive use of bicycles or are to be shared
with other transportation modes.
25. Buffer-Separated Lane-a preferential lane
or other special purpose lane that is separated from the adjacent
general-purpose lane(s) by a pattern of standard longitudinal pavement markings
that is wider than a normal or wide lane line marking. The buffer area might
include rumble strips, textured pavement, or channelizing devices such as
tubular markers or traversable curbs, but does not include a physical
barrier.
26. Cantilevered Signal
Structure-a structure, also referred to as a mast arm, that is rigidly attached
to a vertical pole and is used to provide overhead support of highway traffic
signal faces or grade crossing signal units.
27. Center Line Markings-the yellow pavement
marking line(s) that delineates the separation of traffic lanes that have
opposite directions of travel on a roadway. These markings need not be at the
geometrical center of the pavement.
28. Changeable Message Sign-a sign that is
capable of displaying more than one message (one of which might be a "blank"
display), changeable manually, by remote control, or by automatic control.
Electronic-display changeable message signs are referred to as Dynamic Message
Signs in the National Intelligent Transportation Systems (ITS) Architecture and
are referred to as Variable Message Signs in the National Electrical
Manufacturers Association (NEMA) standards publication.
29. Channelizing Line Markings-a wide or
double solid white line used to form islands where traffic in the same
direction of travel is permitted on both sides of the island.
30. Circular Intersection-an intersection
that has an island, generally circular in design, located in the center of the
intersection where traffic passes to the right of the island. Circular
intersections include roundabouts, rotaries, and traffic circles.
31. Circulatory Roadway-the roadway within a
circular intersection on which traffic travels in a counterclockwise direction
around an island in the center of the circular intersection.
32. Clear Storage Distance-when used in Part
8, the distance available for vehicle storage measured between 6 feet from the
rail nearest the intersection to the intersection stop line or the normal
stopping point on the highway. At skewed grade crossings and intersections, the
6-foot distance shall be measured perpendicular to the nearest rail either
along the center line or edge line of the highway, as appropriate, to obtain
the shorter distance. Where exit gates are used, the distance available for
vehicle storage is measured from the point where the rear of the vehicle would
be clear of the exit gate arm. In cases where the exit gate arm is parallel to
the track(s) and is not perpendicular to the highway, the distance is measured
either along the center line or edge line of the highway, as appropriate, to
obtain the shorter distance.
33.
Clear Zone-the total roadside border area, starting at the edge of the traveled
way, that is available for an errant driver to stop or regain control of a
vehicle. This area might consist of a shoulder, a recoverable slope, and/or a
non-recoverable, traversable slope with a clear run-out area at its
toe.
34. Collector Highway-a term
denoting a highway that in rural areas connects small towns and local highways
to arterial highways, and in urban areas provides land access and traffic
circulation within residential, commercial, and business areas and connects
local highways to the arterial highways.
35. Concurrent Flow Preferential Lane-a
preferential lane that is operated in the same direction as the adjacent mixed
flow lanes, separated from the adjacent general-purpose freeway lanes by a
standard lane stripe, painted buffer, or barrier.
36. Conflict Monitor-a device used to detect
and respond to improper or conflicting signal indications and improper
operating voltages in a traffic controller assembly.
37. Constant Warning Time Detection-a means
of detecting rail traffic that provides relatively uniform warning time for the
approach of trains or light rail transit traffic that are not accelerating or
decelerating after being detected.
38. Contiguous Lane-a lane, preferential or
otherwise, that is separated from the adjacent lane(s) only by a normal or wide
lane line marking.
39. Controller
Assembly-a complete electrical device mounted in a cabinet for controlling the
operation of a highway traffic signal.
40. Controller Unit-that part of a controller
assembly that is devoted to the selection and timing of the display of signal
indications.
41. Conventional
Road-a street or highway other than a low-volume road (as defined in Section
5A.01), expressway, or freeway.
42.
Counter-Flow Lane-a lane operating in a direction opposite to the normal flow
of traffic designated for peak direction of travel during at least a portion of
the day. Counter-flow lanes are usually separated from the off-peak direction
lanes by tubular markers or other flexible channelizing devices, temporary lane
separators, or movable or permanent barrier.
43. Crashworthy-a characteristic of a
roadside appurtenance that has been successfully crash tested in accordance
with a national standard such as the National Cooperative Highway Research
Program Report 350, "Recommended Procedures for the Safety Performance
Evaluation of Highway Features."
44. Crosswalk-(a) that part of a roadway at
an intersection included within the connections of the lateral lines of the
sidewalks on opposite sides of the highway measured from the curbs or in the
absence of curbs, from the edges of the traversable roadway, and in the absence
of a sidewalk on one side of the roadway, the part of a roadway included within
the extension of the lateral lines of the sidewalk at right angles to the
center line; (b) any portion of a roadway at an intersection or elsewhere
distinctly indicated as a pedestrian crossing by pavement marking lines on the
surface, which might be supplemented by contrasting pavement texture, style, or
color.
45. Crosswalk Lines-white
pavement marking lines that identify a crosswalk.
46. Cycle Length-the time required for one
complete sequence of signal indications.
47. Dark Mode-the lack of all signal
indications at a signalized location. (The dark mode is most commonly
associated with power failures, ramp meters, hybrid beacons, beacons, and some
movable bridge signals.)
48.
Delineator-a retroreflective device mounted on the roadway surface or at the
side of the roadway in a series to indicate the alignment of the roadway,
especially at night or in adverse weather.
49. Design Vehicle- when used in Part 8, the
longest vehicle permitted by statute of the road authority (State or other) on
that roadway. When used in the remaining Parts of the Manual, the design
vehicle, as defined by AASHTO, is the weight, dimensions and operating
characteristics of a representative vehicle used to establish highway design
controls for accommodating vehicles of a designated class. For purposes of
geometric design, each design vehicle has larger physical dimensions and a
larger minimum turning radius than most vehicles in its class.
50. Designated Bicycle Route-a system of
bikeways designated by the jurisdiction having authority with appropriate
directional and informational route signs, with or without specific bicycle
route numbers.
51.
Detectable-having a continuous edge within 6 inches of the surface so that
pedestrians who have visual disabilities can sense its presence and receive
usable guidance information.
52.
Detector-a device used for determining the presence or passage of vehicles or
pedestrians.
53. Downstream-a term
that refers to a location that is encountered by traffic subsequent to an
upstream location as it flows in an "upstream to downstream" direction. For
example, "the downstream end of a lane line separating the turn lane from a
through lane on the approach to an intersection" is the end of the lane line
that is closest to the intersection.
54. Dropped Lane-a through lane that becomes
a mandatory turn lane on a conventional roadway, or a through lane that becomes
a mandatory exit lane on a freeway or expressway. The end of an acceleration
lane and reductions in the number of through lanes that do not involve a
mandatory turn or exit are not considered dropped lanes.
55. Dual-Arrow Signal Section-a type of
signal section designed to include both a yellow arrow and a green
arrow.
56. Dynamic Envelope-the
clearance required for light rail transit traffic or a train and its cargo
overhang due to any combination of loading, lateral motion, or suspension
failure (see Figure 8B-8).
57.
Dynamic Exit Gate Operating Mode-a mode of operation where the exit gate
operation is based on the presence of vehicles within the minimum track
clearance distance.
58. Edge Line
Markings-white or yellow pavement marking lines that delineate the right or
left edge(s) of a traveled way.
59.
Electronic Toll Collection (ETC)-a system for automated collection of tolls
from moving or stopped vehicles through wireless technologies such as
radio-frequency communication or optical scanning. ETC systems are classified
as one of the following:
(1) systems that
require users to have registered toll accounts, with the use of equipment
inside or on the exterior of vehicles, such as a transponder or barcode decal,
that communicates with or is detected by roadside or overhead receiving
equipment, or with the use of license plate optical scanning, to automatically
deduct the toll from the registered user account, or
(2) systems that do not require users to have
registered toll accounts because vehicle license plates are optically scanned
and invoices for the toll amount are sent through postal mail to the address of
the vehicle owner.
60.
Electronic Toll Collection (ETC) Account Only Lane-a non-attended toll lane
that is restricted to use only by vehicles with a registered toll payment
account.
61. Emergency-Vehicle
Hybrid Beacon-a special type of hybrid beacon used to warn and control traffic
at an unsignalized location to assist authorized emergency vehicles in entering
or crossing a street or highway.
62. Emergency-Vehicle Traffic Control
Signal-a special traffic control signal that assigns the right-of-way to an
authorized emergency vehicle.
63.
End-of-Roadway Marker-a device used to warn and alert road users of the end of
a roadway in other than temporary traffic control zones.
64. Engineering Judgment-the evaluation of
available pertinent information, and the application of appropriate principles,
provisions, and practices as contained in this Manual and other sources, for
the purpose of deciding upon the applicability, design, operation, or
installation of a traffic control device. Engineering judgment shall be
exercised by an engineer, or by an individual working under the supervision of
an engineer, through the application of procedures and criteria established by
the engineer. Documentation of engineering judgment is not required.
65. Engineering Study-the comprehensive
analysis and evaluation of available pertinent information, and the application
of appropriate principles, provisions, and practices as contained in this
Manual and other sources, for the purpose of deciding upon the applicability,
design, operation, or installation of a traffic control device. An engineering
study shall be performed by an engineer, or by an individual working under the
supervision of an engineer, through the application of procedures and criteria
established by the engineer. An engineering study shall be
documented.
66. Entrance Gate-an
automatic gate that can be lowered across the lanes approaching a grade
crossing to block road users from entering the grade crossing.
67. Exact Change Lane (Automatic Lane)-a
non-attended toll lane that has a receptacle into which road users deposit
coins, insert bills, or use an alternate form of electronic payment such as
credit card or debit card totaling the exact amount of the toll. Exact Change
lanes at toll plazas typically require vehicles to stop to pay the
toll.
68. Exit Gate-an automatic
gate that can be lowered across the lanes departing a grade crossing to block
road users from entering the grade crossing by driving in the opposing traffic
lanes.
69. Exit Gate Clearance
Time-for Four-Quadrant Gate systems at grade crossings, the amount of time
provided to delay the descent of the exit gate arm(s) after entrance gate
arm(s) begin to descend.
70. Exit
Gate Operating Mode-for Four-Quadrant Gate systems at grade crossings, the mode
of control used to govern the operation of the exit gate arms.
71. Expressway-a divided highway with partial
control of access, typically an uninterrupted-flow facility without driveways
but with median crossovers and unsignalized intersections.
72. Flagger-a person, other than a uniformed
traffic control officer, who actively controls the flow of vehicular traffic
into and/or through a temporary traffic control zone using hand-signaling
devices or an Automated Flagger Assistance Device (AFAD).
73. Flasher-a device used to turn highway
traffic signal indications on and off at a repetitive rate of approximately
once per second.
74. Flashing-an
operation in which a light source, such as a traffic signal indication, is
turned on and off repetitively.
75.
Flashing-Light Signals-a warning device consisting of two red signal
indications arranged horizontally that are activated to flash alternately when
rail traffic is approaching or present at a grade crossing.
76. Flashing Mode-a mode of operation in
which at least one traffic signal indication in each vehicular signal face of a
highway traffic signal is turned on and off repetitively.
77. Freeway-a divided highway with full
control of access.
78.
Full-Actuated Operation-a type of traffic control signal operation in which all
signal phases function on the basis of actuation.
79. Gate-an automatically-operated or
manually-operated traffic control device that is used to physically obstruct
road users such that they are discouraged from proceeding past a particular
point on a roadway or pathway, or such that they are discouraged from entering
a particular grade crossing, ramp, lane, roadway, or facility.
80. Grade Crossing-the general area where a
highway and a railroad and/or light rail transit route cross at the same level,
within which are included the tracks, highway, and traffic control devices for
traffic traversing that area.
81.
Guide Sign-a sign that shows route designations, destinations, directions,
distances, services, points of interest, or other geographical, recreational,
or cultural information.
82.
High-Occupancy Vehicle (HOV)-a motor vehicle carrying at least two or more
persons, including carpools, vanpools, and buses.
83. Highway-a general term for denoting a
public way for purposes of vehicular travel, including the entire area within
the right-of-way.
84. Highway-Light
Rail Transit Grade Crossing-the general area where a highway and a light rail
transit route cross at the same level, within which are included the light rail
transit tracks, highway, and traffic control devices for traffic traversing
that area.
85. Highway-Rail Grade
Crossing-the general area where a highway and a railroad cross at the same
level, within which are included the railroad tracks, highway, and traffic
control devices for highway traffic traversing that area.
86. Highway Traffic Signal-a power-operated
traffic control device by which traffic is warned or directed to take some
specific action. These devices do not include power-operated signs,
steadily-illuminated pavement markers, warning lights (see Section 6F.83), or
steady burning electric lamps.
87.
HOV Lane-any preferential lane designated for exclusive use by high-occupancy
vehicles for all or part of a day-including a designated lane on a freeway,
other highway, street, or independent roadway on a separate
right-of-way.
88. Hybrid Beacon-a
special type of beacon that is intentionally placed in a dark mode (no
indications displayed) between periods of operation and, when operated,
displays both steady and flashing traffic control signal indications.
89. Inherently Low Emission Vehicle
(ILEV)-any kind of vehicle that, because of inherent properties of the fuel
system design, will not have significant evaporative emissions, even if its
evaporative emission control system has failed.
90. In-Roadway Lights-a special type of
highway traffic signal installed in the roadway surface to warn road users that
they are approaching a condition on or adjacent to the roadway that might not
be readily apparent and might require the road users to slow down and/or come
to a stop.
91. Interchange-a system
of interconnecting roadways providing for traffic movement between two or more
highways that do not intersect at grade.
92. Interconnection-when used in Part 8, the
electrical connection between the railroad or light rail transit active warning
system and the highway traffic signal controller assembly for the purpose of
preemption.
93. Intermediate
Interchange-an interchange with an urban or rural route that is not a major or
minor interchange as defined in this Section.
94. Intersection-intersection is defined as
follows:
(a) The area embraced within the
prolongation or connection of the lateral curb lines, or if none, the lateral
boundary lines of the roadways of two highways that join one another at, or
approximately at, right angles, or the area within which vehicles traveling on
different highways that join at any other angle might come into
conflict.
(b) The junction of an
alley or driveway with a roadway or highway shall not constitute an
intersection, unless the roadway or highway at said junction is controlled by a
traffic control device.
(c) If a
highway includes two roadways that are 30 feet or more apart (see definition of
Median), then every crossing of each roadway of such divided highway by an
intersecting highway shall be a separate intersection.
(d) If both intersecting highways include two
roadways that are 30 feet or more apart, then every crossing of any two
roadways of such highways shall be a separate intersection.
(e) At a location controlled by a traffic
control signal, regardless of the distance between the separate intersections
as defined in (c) and (d) above:
(1) If a
stop line, yield line, or crosswalk has not been designated on the roadway
(within the median) between the separate intersections, the two intersections
and the roadway (median) between them shall be considered as one
intersection;
(2) Where a stop
line, yield line, or crosswalk is designated on the roadway on the intersection
approach, the area within the crosswalk and/or beyond the designated stop line
or yield line shall be part of the intersection; and
(3) Where a crosswalk is designated on a
roadway on the departure from the intersection, the intersection shall include
the area extending to the far side of such
crosswalk.
95.
Intersection Control Beacon-a beacon used only at an intersection to control
two or more directions of travel.
96. Interval-the part of a signal cycle
during which signal indications do not change.
97. Interval Sequence-the order of appearance
of signal indications during successive intervals of a signal cycle.
98. Island-a defined area between traffic
lanes for control of vehicular movements, for toll collection, or for
pedestrian refuge. It includes all end protection and approach treatments.
Within an intersection area, a median or an outer separation is considered to
be an island.
99. Lane Drop-see
Dropped Lane.
100. Lane Line
Markings-white pavement marking lines that delineate the separation of traffic
lanes that have the same direction of travel on a roadway.
101. Lane-Use Control Signal-a signal face
displaying indications to permit or prohibit the use of specific lanes of a
roadway or to indicate the impending prohibition of such use.
102. Legend-see Sign Legend.
103. Lens-see Signal Lens.
104. Light Rail Transit Traffic (Light Rail
Transit Equipment)-every device in, upon, or by which any person or property
can be transported on light rail transit tracks, including single-unit light
rail transit cars (such at streetcars and trolleys) and assemblies of multiple
light rail transit cars coupled together.
105. Locomotive Horn-an air horn, steam
whistle, or similar audible warning device (see 49 CFR Part 229.129) mounted
on a locomotive or control cab car. The terms "locomotive horn," "train
whistle," "locomotive whistle," and "train horn" are used interchangeably in
the railroad industry.
106. Logo-a
distinctive emblem or trademark that identifies a commercial business and/or
the product or service offered by the business.
107. Longitudinal Markings-pavement markings
that are generally placed parallel and adjacent to the flow of traffic such as
lane lines, center lines, edge lines, channelizing lines, and others.
108. Louver-see Signal Louver.
109. Major Interchange-an interchange with
another freeway or expressway, or an interchange with a high-volume multi-lane
highway, principal urban arterial, or major rural route where the interchanging
traffic is heavy or includes many road users unfamiliar with the
area.
110. Major Street-the street
normally carrying the higher volume of vehicular traffic.
111. Malfunction Management Unit-same as
Conflict Monitor.
112. Managed
Lane-a highway lane or set of lanes, or a highway facility, for which variable
operational strategies such as direction of travel, tolling, pricing, and/or
vehicle type or occupancy requirements are implemented and managed in real-time
in response to changing conditions. Managed lanes are typically buffer- or
barrier-separated lanes parallel to the general-purpose lanes of a highway in
which access is restricted to designated locations. There are also some
highways on which all lanes are managed.
113. Manual Lane-see Attended Lane.
114. Maximum Highway Traffic Signal
Preemption Time-the maximum amount of time needed following initiation of the
preemption sequence for the highway traffic signals to complete the timing of
the right-of-way transfer time, queue clearance time, and separation
time.
115. Median-the area between
two roadways of a divided highway measured from edge of traveled way to edge of
traveled way. The median excludes turn lanes. The median width might be
different between intersections, interchanges, and at opposite approaches of
the same intersection.
116. Minimum
Track Clearance Distance-for standard two-quadrant warning devices, the minimum
track clearance distance is the length along a highway at one or more railroad
or light rail transit tracks, measured from the highway stop line, warning
device, or 12 feet perpendicular to the track center line, to 6 feet beyond the
track(s) measured perpendicular to the far rail, along the center line or edge
line of the highway, as appropriate, to obtain the longer distance. For
Four-Quadrant Gate systems, the minimum track clearance distance is the length
along a highway at one or more railroad or light rail transit tracks, measured
either from the highway stop line or entrance warning device, to the point
where the rear of the vehicle would be clear of the exit gate arm. In cases
where the exit gate arm is parallel to the track(s) and is not perpendicular to
the highway, the distance is measured either along the center line or edge line
of the highway, as appropriate, to obtain the longer distance.
117. Minimum Warning Time-when used in Part
8, the least amount of time active warning devices shall operate prior to the
arrival of rail traffic at a grade crossing.
118. Minor Interchange-an interchange where
traffic is local and very light, such as interchanges with land service access
roads. Where the sum of the exit volumes is estimated to be lower than 100
vehicles per day in the design year, the interchange is classified as
local.
119. Minor Street-the street
normally carrying the lower volume of vehicular traffic.
120. Movable Bridge Resistance Gate-a type of
traffic gate, which is located downstream of the movable bridge warning gate,
that provides a physical deterrent to vehicle and/or pedestrian traffic when
placed in the appropriate position.
121. Movable Bridge Signal-a highway traffic
signal installed at a movable bridge to notify traffic to stop during periods
when the roadway is closed to allow the bridge to open.
122. Movable Bridge Warning Gate-a type of
traffic gate designed to warn, but not primarily to block, vehicle and/or
pedestrian traffic when placed in the appropriate position.
123. Multi-Lane-more than one lane moving in
the same direction. A multi-lane street, highway, or roadway has a basic
cross-section comprised of two or more through lanes in one or both directions.
A multi-lane approach has two or more lanes moving toward the intersection,
including turning lanes.
124.
Neutral Area-the paved area between the channelizing lines separating an
entrance or exit ramp or a channelized turn lane or channelized entering lane
from the adjacent through lane(s).
125. Object Marker-a device used to mark
obstructions within or adjacent to the roadway.
126. Occupancy Requirement-any restriction
that regulates the use of a facility or one or more lanes of a facility for any
period of the day based on a specified number of persons in a
vehicle.
127. Occupant-a person
driving or riding in a car, truck, bus, or other vehicle.
128. Open-Road ETC Lane-a non-attended lane
that is designed to allow toll payments to be electronically collected from
vehicles traveling at normal highway speeds. Open-Road ETC lanes are typically
physically separated from the toll plaza, often following the alignment of the
mainline lanes, with toll plaza lanes for cash toll payments being on a
different alignment after diverging from the mainline lanes or a subset
thereof.
129. Open-Road Tolling-a
system designed to allow electronic toll collection (ETC) from vehicles
traveling at normal highway speeds. Open-Road Tolling might be used on toll
roads or toll facilities in conjunction with toll plazas. Open-Road Tolling is
also typically used on managed lanes and on toll facilities that only accept
payment by ETC.
130. Open-Road
Tolling Point-the location along an Open-Road ETC lane at which roadside or
overhead detection and receiving equipment are placed and vehicles are
electronically assessed a toll.
131. Opposing Traffic-vehicles that are
traveling in the opposite direction. At an intersection, vehicles entering from
an approach that is approximately straight ahead would be considered to be
opposing traffic, but vehicles entering from approaches on the left or right
would not be considered to be opposing traffic.
132. Overhead Sign-a sign that is placed such
that a portion or the entirety of the sign or its support is directly above the
roadway or shoulder such that vehicles travel below it. Typical installations
include signs placed on cantilever arms that extend over the roadway or
shoulder, on sign support structures that span the entire width of the
pavement, on mast arms or span wires that also support traffic control signals,
and on highway bridges that cross over the roadway.
133. Parking Area-a parking lot or parking
garage that is separated from a roadway. Parallel or angle parking spaces along
a roadway are not considered a parking area.
134. Passive Grade Crossing-a grade crossing
where none of the automatic traffic control devices associated with an Active
Grade Crossing Warning System are present and at which the traffic control
devices consist entirely of signs and/or markings.
135. Pathway-a general term denoting a public
way for purposes of travel by authorized users outside the traveled way and
physically separated from the roadway by an open space or barrier and either
within the highway right-of-way or within an independent alignment. Pathways
include shared-use paths, but do not include sidewalks.
136. Pathway Grade Crossing-the general area
where a pathway and railroad or light rail transit tracks cross at the same
level, within which are included the tracks, pathway, and traffic control
devices for pathway traffic traversing that area.
137. Paved-a bituminous surface treatment,
mixed bituminous concrete, or Portland cement concrete roadway surface that has
both a structural (weight bearing) and a sealing purpose for the
roadway.
138. Pedestrian-a person
on foot, in a wheelchair, on skates, on a skateboard, or as defined in the
Delaware Code.
139. Pedestrian
Change Interval-an interval during which the flashing UPRAISED HAND
(symbolizing DONT WALK) signal indication is displayed.
140. Pedestrian Clearance Time-the time
provided for a pedestrian crossing in a crosswalk, after leaving the curb or
shoulder, to travel to the far side of the traveled way or to a
median.
141. Pedestrian
Facilities-a general term denoting improvements and provisions made to
accommodate or encourage walking.
142. Pedestrian Hybrid Beacon- a special type
of hybrid beacon used to warn and control traffic at an unsignalized location
to assist pedestrians in crossing a street or highway at a marked
crosswalk.
143. Pedestrian Signal
Head-a signal head, which contains the symbols WALKING PERSON (symbolizing
WALK) and UPRAISED HAND (symbolizing DONT WALK), that is installed to direct
pedestrian traffic at a traffic control signal or at a pedestrian hybrid
beacon.
144. Permissive Mode-a mode
of traffic control signal operation in which left or right turns are permitted
to be made after yielding to pedestrians, if any, and/or opposing traffic, if
any. When a CIRCULAR GREEN signal indication is displayed, both left and right
turns are permitted unless otherwise prohibited by another traffic control
device. When a flashing YELLOW ARROW or flashing RED ARROW signal indication is
displayed, the turn indicated by the arrow is permitted.
145. Physical Gore-a longitudinal point where
a physical barrier or the lack of a paved surface inhibits road users from
crossing from a ramp or channelized turn lane or channelized entering lane to
the adjacent through lane(s) or vice versa.
146. Pictograph-a pictorial representation
used to identify a governmental jurisdiction, an area of jurisdiction, a
governmental agency, a military base or branch of service, a
governmental-approved university or college, a toll payment system, or a
government-approved institution.
147. Plaque-a traffic control device intended
to communicate specific information to road users through a word, symbol, or
arrow legend that is placed immediately adjacent to a sign to supplement the
message on the sign. The difference between a plaque and a sign is that a
plaque cannot be used alone. The designation for a plaque includes a "P"
suffix.
148. Platoon-a group of
vehicles or pedestrians traveling together as a group, either voluntarily or
involuntarily, because of traffic signal controls, geometrics, or other
factors.
149. Portable Traffic
Control Signal-a temporary traffic control signal that is designed so that it
can be easily transported and reused at different locations.
150. Post-Mounted Sign-a sign that is placed
to the side of the roadway such that no portion of the sign or its support is
directly above the roadway or shoulder.
151. Posted Speed Limit-a speed limit
determined by law or regulation and displayed on Speed Limit signs.
152. Preemption-the transfer of normal
operation of a traffic control signal to a special control mode of
operation.
153. Preferential Lane-a
highway lane reserved for the exclusive use of one or more specific types of
vehicles or vehicles with at least a specific number of occupants.
154. Pre-Signal-traffic control signal faces
that control traffic approaching a grade crossing in conjunction with the
traffic control signal faces that control traffic approaching a highway-highway
intersection beyond the tracks. Supplemental near-side traffic control signal
faces for the highway-highway intersection are not considered pre-signals.
Pre-signals are typically used where the clear storage distance is insufficient
to store one or more design vehicles.
155. Pretimed Operation-a type of traffic
control signal operation in which none of the signal phases function on the
basis of actuation.
156. Primary
Signal Face-one of the required or recommended minimum number of signal faces
for a given approach or separate turning movement, but not including near-side
signal faces required as a result of the far-side signal faces exceeding the
maximum distance from the stop line.
157. Principal Legend-place names, street
names, and route numbers placed on guide signs.
158. Priority Control-a means by which the
assignment of right-of-way is obtained or modified.
159. Private Road Open to Public
Travel-private toll roads and roads (including any adjacent sidewalks that
generally run parallel to the road) within shopping centers, airports, sports
arenas, and other similar business and/or recreation facilities that are
privately owned, but where the public is allowed to travel without access
restrictions. Roads within private gated properties (except for gated toll
roads) where access is restricted at all times, parking areas, driving aisles
within parking areas, and private grade crossings shall not be included in this
definition.
160. Protected Mode-a
mode of traffic control signal operation in which left or right turns are
permitted to be made when a left or right GREEN ARROW signal indication is
displayed.
161. Public Road-any
road, street, or similar facility under the jurisdiction of and maintained by a
public agency and open to public travel.
162. Pushbutton-a button to activate a device
or signal timing for pedestrians, bicyclists, or other road users.
163. Pushbutton Information Message-a
recorded message that can be actuated by pressing a pushbutton when the walk
interval is not timing and that provides the name of the street that the
crosswalk associated with that particular pushbutton crosses and can also
provide other information about the intersection signalization or
geometry.
164. Pushbutton Locator
Tone-a repeating sound that informs approaching pedestrians that a pushbutton
exists to actuate pedestrian timing or receive additional information and that
enables pedestrians who have visual disabilities to locate the
pushbutton.
165. Queue Clearance
Time-when used in Part 8, the time required for the design vehicle of maximum
length stopped just inside the minimum track clearance distance to start up and
move through and clear the entire minimum track clearance distance. If
pre-signals are present, this time shall be long enough to allow the vehicle to
move through the intersection, or to clear the tracks if there is sufficient
clear storage distance. If a Four-Quadrant Gate system is present, this time
shall be long enough to permit the exit gate arm to lower after the design
vehicle is clear of the minimum track clearance distance.
166. Quiet Zone-a segment of a rail line,
with one or a number of consecutive public highway-rail grade crossings at
which locomotive horns are not routinely sounded per 49 CFR Part 222.
167. Rail Traffic-every device in, upon, or
by which any person or property can be transported on rails or tracks and to
which all other traffic must yield the right-of-way by law at grade crossings,
including trains, one or more locomotives coupled (with or without cars), other
railroad equipment, and light rail transit operating in exclusive or
semi-exclusive alignments. Light rail transit operating in a mixed-use
alignment, to which other traffic is not required to yield the right-of-way by
law, is a vehicle and is not considered to be rail traffic.
168. Raised Pavement Marker-a device mounted
on or in a road surface that has a height generally not exceeding approximately
1 inch above the road surface for a permanent marker, or not exceeding
approximately 2 inches above the road surface for a temporary flexible marker,
and that is intended to be used as a positioning guide and/or to supplement or
substitute for pavement markings.
169. Ramp Control Signal-a highway traffic
signal installed to control the flow of traffic onto a freeway at an entrance
ramp or at a freeway-to-freeway ramp connection.
170. Ramp Meter-see Ramp Control
Signal.
171. Red Clearance
Interval-an interval that follows a yellow change interval and precedes the
next conflicting green interval.
172. Regulatory Sign-a sign that gives notice
to road users of traffic laws or regulations.
173. Retroreflectivity-a property of a
surface that allows a large portion of the light coming from a point source to
be returned directly back to a point near its origin.
174. Right-of-Way [Assignment]-the permitting
of vehicles and/or pedestrians to proceed in a lawful manner in preference to
other vehicles or pedestrians by the display of a sign or signal
indications.
175. Right-of-Way
Transfer Time-when used in Part 8, the maximum amount of time needed for the
worst case condition, prior to display of the track clearance green interval.
This includes any railroad or light rail transit or highway traffic signal
control equipment time to react to a preemption call, and any traffic control
signal green, pedestrian walk and clearance, yellow change, and red clearance
intervals for conflicting traffic.
176. Road-see Roadway.
177. Road User-a vehicle operator, bicyclist,
or pedestrian, including persons with disabilities, within the highway or on a
private road open to public travel.
178. Roadway-that portion of a highway
improved, designed, or ordinarily used for vehicular travel and parking lanes,
but exclusive of the sidewalk, berm, or shoulder even though such sidewalk,
berm, or shoulder is used by persons riding bicycles or other human-powered
vehicles. In the event a highway includes two or more separate roadways, the
term roadway as used in this Manual shall refer to any such roadway separately,
but not to all such roadways collectively.
179. Roadway Network-a geographical
arrangement of intersecting roadways.
180. Roundabout-a circular intersection with
yield control at entry, which permits a vehicle on the circulatory roadway to
proceed, and with deflection of the approaching vehicle counter-clockwise
around a central island.
181.
Rumble Strip-a series of intermittent, narrow, transverse areas of
rough-textured, slightly raised, or depressed road surface that extend across
the travel lane to alert road users to unusual traffic conditions or are
located along the shoulder, along the roadway center line, or within islands
formed by pavement markings to alert road users that they are leaving the
travel lanes.
182. Rural Highway-a
type of roadway normally characterized by lower volumes, higher speeds, fewer
turning conflicts, and less conflict with pedestrians.
183. Safe-Positioned-the positioning of
emergency vehicles at an incident in a manner that attempts to protect both the
responders performing their duties and road users traveling through the
incident scene, while minimizing, to the extent practical, disruption of the
adjacent traffic flow.
184.
School-a public or private educational institution recognized by the State
education authority for one or more grades K through 12 or as otherwise defined
by the State.
185. School Zone-a
designated roadway segment approaching, adjacent to, and beyond school
buildings or grounds, or along which school related activities occur.
186. Semi-Actuated Operation-a type of
traffic control signal operation in which at least one, but not all, signal
phases function on the basis of actuation.
187. Separate Turn Signal Face-a signal face
that exclusively controls a turn movement and that displays signal indications
that are applicable only to the turn movement.
188. Separation Time-the component of maximum
highway traffic signal preemption time during which the minimum track clearance
distance is clear of vehicular traffic prior to the arrival of rail
traffic.
189. Shared Roadway-a
roadway that is officially designated and marked as a bicycle route, but which
is open to motor vehicle travel and upon which no bicycle lane is
designated.
190. Shared Turn Signal
Face-a signal face, for controlling both a turn movement and the adjacent
through movement, that always displays the same color of circular signal
indication that the adjacent through signal face or faces display.
191. Shared-Use Path-a bikeway outside the
traveled way and physically separated from motorized vehicular traffic by an
open space or barrier and either within the highway right-of-way or within an
independent alignment. Shared-use paths are also used by pedestrians (including
skaters, users of manual and motorized wheelchairs, and joggers) and other
authorized motorized and non-motorized users.
192. Sidewalk-that portion of a street
between the curb line, or the lateral line of a roadway, and the adjacent
property line or on easements of private property that is paved or improved and
intended for use by pedestrians.
193. Sign-any traffic control device that is
intended to communicate specific information to road users through a word,
symbol, and/or arrow legend. Signs do not include highway traffic signals,
pavement markings, delineators, or channelization devices.
194. Sign Assembly-a group of signs, located
on the same support(s), that supplement one another in conveying information to
road users.
195. Sign
Illumination-either internal or external lighting that shows similar color by
day or night. Street or highway lighting shall not be considered as meeting
this definition.
196. Sign
Legend-all word messages, logos, pictographs, and symbol and arrow designs that
are intended to convey specific meanings. The border, if any, on a sign is not
considered to be a part of the legend.
197. Sign Panel-a separate panel or piece of
material containing a word, symbol, and/or arrow legend that is affixed to the
face of a sign.
198. Signal
Backplate-a thin strip of material that extends outward from and parallel to a
signal face on all sides of a signal housing to provide a background for
improved visibility of the signal indications.
199. Signal Coordination-the establishment of
timed relationships between adjacent traffic control signals.
200. Signal Face-an assembly of one or more
signal sections that is provided for controlling one or more traffic movements
on a single approach.
201. Signal
Head-an assembly of one or more signal faces that is provided for controlling
traffic movements on one or more approaches.
202. Signal Housing-that part of a signal
section that protects the light source and other required components.
203. Signal Indication-the illumination of a
signal lens or equivalent device.
204. Signal Lens-that part of the signal
section that redirects the light coming directly from the light source and its
reflector, if any.
205. Signal
Louver-a device that can be mounted inside a signal visor to restrict
visibility of a signal indication from the side or to limit the visibility of
the signal indication to a certain lane or lanes, or to a certain distance from
the stop line.
206. Signal
Phase-the right-of-way, yellow change, and red clearance intervals in a cycle
that are assigned to an independent traffic movement or combination of
movements.
207. Signal Section-the
assembly of a signal housing, signal lens, if any, and light source with
necessary components to be used for displaying one signal indication.
208. Signal System-two or more traffic
control signals operating in signal coordination.
209. Signal Timing-the amount of time
allocated for the display of a signal indication.
210. Signal Visor-that part of a signal
section that directs the signal indication specifically to approaching traffic
and reduces the effect of direct external light entering the signal
lens.
211. Signing-individual signs
or a group of signs, not necessarily on the same support(s), that supplement
one another in conveying information to road users.
212. Simultaneous Preemption-notification of
approaching rail traffic is forwarded to the highway traffic signal controller
unit or assembly and railroad or light rail transit active warning devices at
the same time.
213. Special Purpose
Road-a low-volume, low-speed road that serves recreational areas or resource
development activities.
214.
Speed-speed is defined based on the following classifications:
(a) Average Speed-the summation of the
instantaneous or spot-measured speeds at a specific location of vehicles
divided by the number of vehicles observed.
(b) Design Speed-a selected speed used to
determine the various geometric design features of a roadway.
(c) 85th-Percentile Speed-the speed at or
below which 85 percent of the motor vehicles travel.
(d) Operating Speed-a speed at which a
typical vehicle or the overall traffic operates. Operating speed might be
defined with speed values such as the average, pace, or 85th-percentile
speeds.
(e) Pace-the 10 mph speed
range representing the speeds of the largest percentage of vehicles in the
traffic stream.
215.
Speed Limit-the maximum (or minimum) speed applicable to a section of highway
as established by law or regulation.
216. Speed Limit Sign Beacon-a beacon used to
supplement a SPEED LIMIT sign.
217.
Speed Measurement Markings-a white transverse pavement marking placed on the
roadway to assist the enforcement of speed regulations.
218. Speed Zone-a section of highway with a
speed limit that is established by law or regulation, but which might be
different from a legislatively specified statutory speed limit.
219. Splitter Island-a median island used to
separate opposing directions of traffic entering and exiting a
roundabout.
220. Station Crossing-a
pathway grade crossing that is associated with a station platform.
221. Statutory Speed Limit-a speed limit
established by legislative action that typically is applicable for a particular
class of highways with specified design, functional, jurisdictional and/or
location characteristics and that is not necessarily displayed on Speed Limit
signs.
222. Steady (Steady
Mode)-the continuous display of a signal indication for the duration of an
interval, signal phase, or consecutive signal phases.
223. Stop Beacon-a beacon used to supplement
a STOP sign, a DO NOT ENTER sign, or a WRONG WAY sign.
224. Stop Line-a solid white pavement marking
line extending across approach lanes to indicate the point at which a stop is
intended or required to be made.
225. Street-see Highway.
226. Supplemental Signal Face-a signal face
that is not a primary signal face but which is provided for a given approach or
separate turning movement to enhance visibility or conspicuity.
227. Symbol-the approved design of a
pictorial representation of a specific traffic control message for signs,
pavement markings, traffic control signals, or other traffic control devices,
as shown in the MUTCD.
228.
Temporary Traffic Control Signal-a traffic control signal that is installed for
a limited time period.
229.
Temporary Traffic Control Zone-an area of a highway where road user conditions
are changed because of a work zone or incident by the use of temporary traffic
control devices, flaggers, uniformed law enforcement officers, or other
authorized personnel.
230.
Theoretical Gore-a longitudinal point at the upstream end of a neutral area at
an exit ramp or channelized turn lane where the channelizing lines that
separate the ramp or channelized turn lane from the adjacent through lane(s)
begin to diverge, or a longitudinal point at the downstream end of a neutral
area at an entrance ramp or channelized entering lane where the channelizing
lines that separate the ramp or channelized entering lane from the adjacent
through lane(s) intersect each other.
231. Timed Exit Gate Operating Mode-a mode of
operation where the exit gate descent at a grade crossing is based on a
predetermined time interval.
232.
Toll Booth-a shelter where a toll attendant is stationed to collect tolls or
issue toll tickets. A toll booth is located adjacent to a toll lane and is
typically set on a toll island.
233. Toll Island-a raised island on which a
toll booth or other toll collection and related equipment are
located.
234. Toll Lane-an
individual lane located within a toll plaza in which a toll payment is
collected or, for toll-ticket systems, a toll ticket is issued.
235. Toll Plaza-the location at which tolls
are collected consisting of a grouping of toll booths, toll islands, toll
lanes, and, typically, a canopy. Toll plazas might be located on highway
mainlines or on interchange ramps. A mainline toll plaza is sometimes referred
to as a barrier toll plaza because it interrupts the traffic flow.
236. Toll-Ticket System-a system in which the
user of a toll road receives a ticket from a machine or toll booth attendant
upon entering a toll system. The ticket denotes the user's point of entry and,
upon exiting the toll system, the user surrenders the ticket and is charged a
toll based on the distance traveled between the points of entry and
exit.
237. Traffic-pedestrians,
bicyclists, ridden or herded animals, vehicles, streetcars, and other
conveyances either singularly or together while using for purposes of travel
any highway or private road open to public travel.
238. Traffic Control Device-a sign, signal,
marking, or other device used to regulate, warn, or guide traffic, placed on,
over, or adjacent to a street, highway, private road open to public travel,
pedestrian facility, or shared-use path by authority of a public agency or
official having jurisdiction, or, in the case of a private road open to public
travel, by authority of the private owner or private official having
jurisdiction.
239. Traffic Control
Signal (Traffic Signal)-any highway traffic signal by which traffic is
alternately directed to stop and permitted to proceed.
240. Train-one or more locomotives coupled,
with or without cars, that operates on rails or tracks and to which all other
traffic must yield the right-of-way by law at highway-rail grade
crossings.
241. Transverse
Markings-pavement markings that are generally placed perpendicular and across
the flow of traffic such as shoulder markings; word, symbol, and arrow
markings; stop lines; crosswalk lines; speed measurement markings; parking
space markings; and others.
242.
Traveled Way-the portion of the roadway for the movement of vehicles, exclusive
of the shoulders, berms, sidewalks, and parking lanes.
243. Turn Bay-a lane for the exclusive use of
turning vehicles that is formed on the approach to the location where the turn
is to be made. In most cases where turn bays are provided, drivers who desire
to turn must move out of a through lane into the newly formed turn bay in order
to turn. A through lane that becomes a turn lane is considered to be a dropped
lane rather than a turn bay.
244.
Upstream-a term that refers to a location that is encountered by traffic prior
to a downstream location as it flows in an "upstream to downstream" direction.
For example, "the upstream end of a lane line separating the turn lane from a
through lane on the approach to an intersection" is the end of the line that is
furthest from the intersection.
245. Urban Street-a type of street normally
characterized by relatively low speeds, wide ranges of traffic volumes,
narrower lanes, frequent intersections and driveways, significant pedestrian
traffic, and more businesses and houses.
246. Vehicle-every device in, upon, or by
which any person or property can be transported or drawn upon a highway, except
trains and light rail transit operating in exclusive or semi-exclusive
alignments. Light rail transit equipment operating in a mixed-use alignment, to
which other traffic is not required to yield the right-of-way by law, is a
vehicle.
247. Vibrotactile
Pedestrian Device-an accessible pedestrian signal feature that communicates, by
touch, information about pedestrian timing using a vibrating surface.
248. Visibility-Limited Signal Face or
Visibility-Limited Signal Section-a type of signal face or signal section
designed (or shielded, hooded, or louvered) to restrict the visibility of a
signal indication from the side, to a certain lane or lanes, or to a certain
distance from the stop line.
249.
Walk Interval-an interval during which the WALKING PERSON (symbolizing WALK)
signal indication is displayed.
250. Warning Beacon-a beacon used only to
supplement an appropriate warning or regulatory sign or marker.
251. Warning Light-a portable, powered,
yellow, lens-directed, enclosed light that is used in a temporary traffic
control zone in either a steady burn or a flashing mode.
252. Warning Sign-a sign that gives notice to
road users of a situation that might not be readily apparent.
253. Warrant-a warrant describes a threshold
condition based upon average or normal conditions that, if found to be
satisfied as part of an engineering study, shall result in analysis of other
traffic conditions or factors to determine whether a traffic control device or
other improvement is justified. Warrants are not a substitute for engineering
judgment. The fact that a warrant for a particular traffic control device is
met is not conclusive justification for the installation of the
device.
254. Wayside Equipment-the
signals, switches, and/or control devices for railroad or light rail transit
operations housed within one or more enclosures located along the railroad or
light rail transit right-of-way and/or on railroad or light rail transit
property.
255. Wayside Horn
System-a stationary horn (or series of horns) located at a grade crossing that
is used in conjunction with train-activated or light rail transit-activated
warning systems to provide audible warning of approaching rail traffic to road
users on the highway or pathway approaches to a grade crossing, either as a
supplement or alternative to the sounding of a locomotive horn.
256. Worker-a person on foot whose duties
place him or her within the right-of-way of a street, highway, or pathway, such
as street, highway, or pathway construction and maintenance forces, survey
crews, utility crews, responders to incidents within the street, highway, or
pathway right-of-way, and law enforcement personnel when directing traffic,
investigating crashes, and handling lane closures, obstructed roadways, and
disasters within the right-of-way of a street, highway, or pathway.
257. Wrong-Way Arrow-a slender, elongated,
white pavement marking arrow placed upstream from the ramp terminus to indicate
the correct direction of traffic flow. Wrong-way arrows are intended primarily
to warn wrong-way road users that they are going in the wrong
direction.
258. Yellow Change
Interval-the first interval following the green or flashing arrow interval
during which the steady yellow signal indication is displayed.
259. Yield Line-a row of solid white
isosceles triangles pointing toward approaching vehicles extending across
approach lanes to indicate the point at which the yield is intended or required
to be made.
Disclaimer: These regulations may not be the most recent version. Delaware may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google
Privacy Policy and
Terms of Service apply.
