Delaware Administrative Code
Title 2 - Transportation
2000 - Department of Transportation
2400 - Division of Transportation Solutions
2402 - Manual on Uniform Traffic Control Devices (MUTCD)
Part 6 - Temporary Traffic Control
Chapter 6F - TEMPORARY TRAFFIC CONTROL ZONE DEVICES
Section 6F.63 - Channelizing Devices
Current through Register Vol. 28, No. 3, September 1, 2024
Standard:
01 (DE Revision) Designs of various channelizing devices shall be as shown in Figure 6F-7. All channelizing devices shall be crashworthy and shall have retroreflective sheeting.
Guidance:
Support:
02 The function of channelizing devices is to warn road users of conditions created by work activities in or near the roadway and to guide road users. Channelizing devices include cones, tubular markers, vertical panels, drums, barricades, and longitudinal channelizing devices.
03 Channelizing devices provide for smooth and gradual vehicular traffic flow from one lane to another, onto a bypass or detour, or into a narrower traveled way. They are also used to channelize vehicular traffic away from the work space, pavement drop-offs, pedestrian or shared-use paths, or opposing directions of vehicular traffic.
Standard:
04 Devices used to channelize pedestrians shall be detectable to users of long canes and visible to persons having low vision.
05 Where channelizing devices are used to channelize pedestrians, there shall be continuous detectable bottom and top surfaces to be detectable to users of long canes. The bottom of the bottom surface shall be no higher than 2 inches above the ground. The top of the top surface shall be no lower than 32 inches above the ground.
Option:
06 A gap not exceeding 2 inches between the bottom rail and the ground surface may be used to facilitate drainage.
Guidance:
07 Where multiple channelizing devices are aligned to form a continuous pedestrian channelizer, connection points should be smooth to optimize long-cane and hand trailing.
08 (DE Revision) The spacing between cones, tubular markers, vertical panels, drums, and barricades should not exceed a distance in feet equal to 1.0 times the speed limit in mph and should not exceed 60 feet when used for both taper channelization and tangent channelization.
09 When channelizing devices have the potential of leading vehicular traffic out of the intended vehicular traffic space as shown in Figure 6H-39, the channelizing devices should be extended a distance in feet of 2.0 times the speed limit in mph beyond the downstream end of the transition area.
Option:
10 Warning lights (see Section 6F.83) may be added to channelizing devices in areas with frequent fog, snow, or severe roadway curvature, or where visual distractions are present.
Guidance:
Standard:
11 Warning lights shall flash when placed on channelizing devices used alone or in a cluster to warn of a condition. Except for the sequential flashing warning lights discussed in Paragraphs 12 and 13, warning lights placed on channelizing devices used in a series to channelize road users shall be steady-burn.
Option:
12 A series of sequential flashing warning lights may be placed on channelizing devices that form a merging taper in order to increase driver detection and recognition of the merging taper.
Standard:
13 When used, the successive flashing of the sequential warning lights shall occur from the upstream end of the merging taper to the downstream end of the merging taper in order to identify the desired vehicle path. Each warning light in the sequence shall be flashed at a rate of not less than 55 nor more than 75 times per minute.
14 (DE Revision) Paragraph relocated.
Option:
15 The name and telephone number of the highway agency, contractor, or supplier may be displayed on the non-retroreflective surface of all types of channelizing devices.
Standard:
16 The letters and numbers of the name and telephone number shall be non-retroreflective and not over 2 inches in height.
Guidance:
17 Particular attention should be given to maintaining the channelizing devices to keep them clean, visible, and properly positioned at all times.
Standard:
18 Devices that are damaged or have lost a significant amount of their retroreflectivity and effectiveness shall be replaced.
