Mercedes-Benz, U.S.A. LLC; Grant of Application for a Temporary Exemption From Federal Motor Vehicle Safety Standard No. 108, 4961-4963 [E6-1079]
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Federal Register / Vol. 71, No. 19 / Monday, January 30, 2006 / Notices
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BILLING CODE 4910–81–P
DEPARTMENT OF TRANSPORTATION
National Highway Traffic Safety
Administration
[Docket No. NHTSA–2005–22653, Notice 2]
Mercedes-Benz, U.S.A. LLC; Grant of
Application for a Temporary
Exemption From Federal Motor Vehicle
Safety Standard No. 108
National Highway Traffic
Safety Administration (NHTSA), DOT.
ACTION: Grant of Application for a
Temporary Exemption from S5.5.10 of
Federal Motor Vehicle Safety Standard
No. 108.
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AGENCY:
SUMMARY: This notice grants the
Mercedes-Benz, U.S.A. LLC (‘‘MBUSA’’)
application for a temporary exemption
from the requirements of S5.5.10 of
Federal Motor Vehicle Safety Standard
(FMVSS) No. 108, Lamps, Reflective
Devices, and Associated Equipment. In
accordance with 49 CFR Part § 555.6(b),
the basis for the grant is to facilitate the
development and field evaluation of
new motor vehicle safety feature
providing a level of safety at least equal
to that of the standard. Pursuant to
§ 555.6(b)(5), MBUSA is permitted to
sell not more than 2,500 exempted
vehicles in any twelve-month period of
the exemption. Because the exemption
period is 24 months, this grant affects
up to a total of 5,000 vehicles.
DATES: The exemption from S5.5.10 of
FMVSS No. 108 is effective from
January 23, 2006 until January 23, 2008.
FOR FURTHER INFORMATION CONTACT:
George Feygin in the Office of Chief
Counsel, NCC–112 Room 5215, 400 7th
Street, SW., Washington, DC 20590
(Phone: 202–366–2992; Fax: 202–366–
3820; E-Mail:
George.Feygin@nhtsa.dot.gov).
VerDate Aug<31>2005
14:07 Jan 27, 2006
Jkt 208001
I. Background
MBUSA petitioned the agency on
behalf of its parent corporation,
DaimlerChrysler AG.1 The petition
seeks a temporary exemption from
S5.5.10 of Federal Motor Vehicle Safety
Standard (FMVSS) No. 108. In short,
S5.5.10 specifies that with certain
exceptions not applicable to this
petition, all lamps, including stop lamps
must be wired to be steady-burning.2 In
order to develop and evaluate an
innovative flashing brake signaling
system in the United States, MBUSA
sought a temporary exemption from the
‘‘steady-burning’’ requirement as it
applies to stop lamps. This system is
currently available in Europe on the Sclass, CL-class, and SL-class Mercedes
vehicles.
MBUSA stated that the system
enhances the emergency braking signal
by flashing three stop lamps required by
FMVSS No. 108 during strong
deceleration. In addition, after
emergency braking, the flashing brake
signaling system automatically activates
the hazard warning lights of the stopped
vehicle until it starts to move again or
the lights are manually switched off.
The petitioner stated that this signaling
system reduces the following drivers’
reaction time by attracting their
attention, and also enhances visibility of
the stopped vehicle, thus helping to
reduce the incidence and severity of
rear end collisions.
NHTSA previously denied
petitioner’s request to amend FMVSS
No. 108 to allow flashing brake
signaling systems. Among the reasons
for the denial was the need for
additional data on safety benefits of
flashing brake lamps. The petitioner
argued that granting this temporary
exemption would allow them to provide
the information NHTSA found lacking.
MBUSA requested a two-year
exemption period. In accordance with
the requirements of 49 CFR
§ 555.6(b)(5), MBUSA will not sell more
than 2,500 exempted vehicles in any
twelve-month period within the twoyear exemption period. For additional
details, please see the MBUSA petition
at https://dms.dot.gov/search/
searchFormSimple.cfm, Docket No.
NHTSA–2005–22653. The following
(Parts II–VI) summarizes MBUSA’s
petition in relevant part.
1 For more information on MBUSA, go to
https://www.mbusa.com.
2 See S5.5.10 of 49 CFR 571.108. Turn signal
lamps, hazard warning signal lamps, school bus
warning lamps must be wired to flash. Headlamps
and side marker lamps may be wired to flash for
signaling purposes. Motorcycle headlamps may be
wired to modulate.
PO 00000
Frm 00072
Fmt 4703
Sfmt 4703
4961
II. Description of the New Motor
Vehicle Safety Feature
The petitioner states that its flashing
brake signaling system provides two
innovative safety-enhancing features.
First, three stop lamps required by
FMVSS No. 108 flash at a frequency of
5 Hz in the event of strong deceleration.
This occurs if the velocity is >50 km/h
(31 mph) and at least one of the
following conditions is met:
1. Deceleration is >7 m/s2; or
2. The brake assist function is active;
or
3. The Electronic Stability Program
(ESP) control unit detects a panic
braking operation.
The petitioner states that the
activation criteria ensures that the
flashing brake signaling system is only
activated when truly needed. Thus, the
brake lights will flash only in severe
braking situations, and will flash at a
relatively high frequency that allows for
fast recognition. Further, using the
panic brake signal from the ESP control
unit as a trigger would activate the
system only when the achievable
deceleration is substantially smaller
than the demanded one. Thus, the stop
lamps would not flash in routine
situations.
Second, after emergency braking, the
system automatically activates the
hazard warning lights of the stopped
vehicle until it starts to move again, or
the lights are manually switched off.
III. Potential Benefits of the New Motor
Vehicle Safety Feature
The petitioner states that the flashing
brake signaling system provides
important safety enhancements not
found in a vehicle equipped with a
traditional brake signaling system. First,
the flashing system reduces the
following driver’s reaction time and
encourages maximum deceleration of
following vehicles. The petitioner
expects especially strong benefits during
adverse weather conditions and for
inattentive drivers. Second, the
activation of hazard warning lamps on
the stopped vehicle also enhances
vehicle recognition after it comes to a
complete stop. The petitioner believes
that together, these features will help to
reduce rear end collisions and improve
safety.
The petitioner acknowledged the
agency’s longstanding restriction on
flashing stop lamps, in the interest of
standardized, instantly recognizable
lighting functions. However, MBUSA
indicated that its system will be easily
recognizable, and would not interfere
with NHTSA’s objectives since
activation of the flashing brake signaling
system would be infrequent.
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30JAN1
4962
Federal Register / Vol. 71, No. 19 / Monday, January 30, 2006 / Notices
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IV. The Petitioner’s Research and
Testing
The petitioner stated that the
development of the flashing brake
signaling system is based on careful
research and testing. The activation
criteria for the flashing brake lights were
established with the help of a driver
behavior study. The petitioner further
states that field studies have
demonstrated that the brake light system
can significantly reduce driver reaction
times.
MBUSA used a driver braking
behavior study to understand how often
rapid deceleration braking occurs in the
United States. The study followed 96
subjects using 15 Mercedes-Benz
vehicles equipped with a driver
behavior and vehicle dynamics
recorder. The study indicated that one
emergency braking maneuver occurred
for every 2,291 miles driven. The study
also suggested that, based on the criteria
described in the previous section, only
23 out of 100,000 braking maneuvers
would activate the flashing stop lamps.
The petitioner concludes that the
flashing brake light will occur rarely,
which will help to avoid ‘‘optical
pollution’’ and enhance the
effectiveness of the brake light system.3
MBUSA sponsored additional field
and driving simulator studies, which
showed that ‘‘appropriately designed
flashing brake lights significantly reduce
drivers’’ reaction times and thus can
reduce the incidence and severity of
rear-end collisions.’’ 4 Specifically, the
study compared reaction times in
emergency braking situations among
conventional brake lights, conventional
brake lights combined with hazard
warning lights, flashing brake lights
with a flashing frequency of 4 Hz, and
flashing brake lights with a flashing
frequency of 7 Hz.
The petitioner states that the study
showed that flashing brake lights reduce
driver reaction time by an average of 0.2
seconds, which is a reduction sufficient
to reduce meaningfully the number and/
or severity of rear-end collisions.
MBUSA argues that even greater
reduction in reaction time would occur
under real-world driving conditions,
where drivers are less focused on the
driving task and subject to more sources
3 MBUSA submitted supporting documentation,
including the driver behavior study, under the
claim of confidentiality. NHTSA granted the
confidentiality request in part and denied it in part.
The time for MBUSA to seek reconosideration of
our confidentiality determination has not elapsed.
In accordance with our regular procedures, the
supporting documentation has not been placed in
the public docket.
4 The study was conducted by Dr. Joerg Breuer
and Thomas Unselt.
VerDate Aug<31>2005
14:07 Jan 27, 2006
Jkt 208001
of distraction. The study also showed
positive effects from the flashing brake
light signal under adverse weather
conditions and in distraction situations.
Finally, the test subjects expressed a
preference for flashing brake lights
when compared to other brake light
signals.
The petitioner states that the Japanese
Ministry of Land, Infrastructure and
Transportation conducted a study to
evaluate the validity and operating
conditions of two types of emergency
brake light displays, one that flashes
upon sudden braking, and one that
enlarges the lighting area of the brake
lamps. The study found that flashing
brake lamps reduced following drivers’
response time in the drivers’ peripheral
fields of vision. The study also showed
that shorter flashing intervals are more
effective. Finally, the study indicated
that an emergency brake light display
that enlarges the lighting area is not as
effective as a flashing brake lamp.
V. How Will a Temporary Exemption
Facilitate the Development and Field
Evaluation of a New Motor Vehicle
Safety Feature?
The petitioner stated that it intends to
monitor the exempted vehicles and
study the effectiveness of the flashing
brake signaling system. First, MBUSA
will gather information about rear-end
collisions of vehicles equipped with the
system. This information will be
combined with the parallel results from
the European fleet and, according to the
petitioner, should prove to be valuable
in evaluating the anticipated safety
benefits of the new brake light system.
Second, the test fleet should enable
MBUSA to evaluate acceptance of the
flashing stop lamps among the
American public.
VI. Why Granting the Petition for
Exemption Is in the Public Interest
As indicated above, the petitioner
argued that granting the requested
exemption from FMVSS No. 108 would
enable them to continue developing and
evaluating its innovative flashing brake
signaling system, thus contributing
substantially to ongoing efforts to
consider the effectiveness of enhanced
lighting systems in reducing rear-end
crashes. MBUSA believes that the
system will help to reduce significantly
following driver reaction times, thus
reducing rear end collisions.
The petitioner also noted that rear end
collisions are a significant traffic safety
concern,5 particularly in dense traffic
5 NCSA 2004 Traffic Safety Facts show 1,334,000
rear collisions involvoing passenger cars and
1,060,000 rear collisions involving light trucks (see
PO 00000
Frm 00073
Fmt 4703
Sfmt 4703
areas, and an important cause of rear
end collisions is a following driver’s
failure to detect that a leading vehicle
has performed an emergency braking
action. MBUSA believes that an
enhanced braking signal that alerts
following drivers to urgent braking
situations has the potential to
significantly enhance safety.
VII. Comments Regarding the MBUSA
Petition
NHTSA published a notice of receipt
of the application on October 7, 2005,
and afforded an opportunity for
comment.6 The agency received two
comments, from Candlepower, Inc.7 and
Richard L. Van Iderstine.8
In his comments, Mr. Van Iderstine
argued that NHTSA only recently
denied a petition to amend S5.5.10 of
FMVSS No. 108 in order to allow
flashing brake signaling systems being
considered in this document. In short,
Mr. Van Iderstine asked what has
changed since the denial of that
petition.
In its comments, Candlepower argued
that temporary exemptions should be
granted ‘‘only in extreme and unusual
circumstances, e.g., evidenced,
demonstrable manufacturer hardship.’’
It also argued that MBUSA’s petition is
‘‘tantamount to requesting permission to
use American roads as a research
laboratory, possibly because European
regulations in force in most of the rest
of the world are more restrictive
regarding nonstandard lighting
functions.’’ Further, it argued that a
novel, nonstandard signal, such as
flashing stop lamp, would cause the
observing driver involuntarily to pause
and attempt to comprehend the signal.
It also argued that unlike Europe where
turn signals must be amber and not red,
in U.S., a flashing stop signal could be
mistaken for a turn signal. Finally,
Candlepower cautioned that new
lighting devices tend to spawn ‘‘poorquality, noncompliant, unsafe copies in
the aftermarket.’’
VIII. The Agency’s Decision and
Response to Public Comments
The petitioner has met the burden of
showing that an exemption would make
easier the field evaluation of a new
motor vehicle safety feature providing,
within the context of 49 CFR part 555,
‘‘a safety level at least equal to that of
the standard.’’ This new safety device is
the same as current stop lamps, except
Tables 42 and 44 at: https://www-nrd.nhtsa.dot.gov/
pdf/nrd-30/NCSA/TSFAnn/TSF2004EE.pdf).
6 See 70 FR 58786.
7 See Docket Nos. NHTSA–2005–22653–4.
8 See Docket Nos. NHTSA–2005–22653–3.
E:\FR\FM\30JAN1.SGM
30JAN1
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Federal Register / Vol. 71, No. 19 / Monday, January 30, 2006 / Notices
that it flashes during emergency
braking. We note, however, that some of
the benefits associated with signal
lamps relate to standardization. We
have not made any determination as to
whether it would be appropriate to
permit flashing stop lamps more
generally. Instead, the granting of this
petition will help the agency gather
additional information necessary to
evaluate more fully the effects of
flashing brake signaling systems on
motor vehicle safety.
As required by § 555.6(b), MBUSA
described the flashing brake signaling
system and provided research,
development, and testing
documentation. This information
included a detailed description of how
a vehicle equipped with the MBUSA
flashing brake signaling system differs
from one that complies with the
standard. MBUSA also explained how
an exemption would facilitate their
safety research efforts. Specifically,
MBUSA will gather information about
rear-end collisions of vehicles equipped
with the system. This information will
be combined with the parallel results
from the European fleet in order to
provide data upon which the agency
may base its evaluation of potential
safety benefits of flashing brake signals.
Based on the petitioner’s driver
behavior study and other supporting
research, we tentatively conclude that
the flashing brake signaling system
provides the level of safety that is at
least equal to that of systems that
comply with FMVSS No. 108.
Finally, we believe that an exemption
is in the public interest because the new
field data obtained through this
temporary exemption would enable the
agency to make more informed
decisions regarding the effect of flashing
brake signaling systems on motor
vehicle safety.
With respect to Mr. Van Iderstine’s
comments, we note that the agency
decision is fully consistent with our
previous decision not to amend FMVSS
No. 108. Instead of a broad and
permanent change in the long-standing
policy regarding flashing stop lamps,
this document grants a narrow
temporary exemption to a discreet group
of (at most) 5,000 vehicles. In denying
the petition to amend FMVSS No. 108,
we indicated that NHTSA has been
conducting research related to signal
enhancements at the Virginia Tech
Transportation Institute, and also
analyzing crash and ‘‘close call’’ data
from a 100-car naturalistic driving study
to determine the potential of enhanced
rear signaling as a means to reduce rear
crashes. Together with that information,
we believe that the field data obtained
VerDate Aug<31>2005
14:07 Jan 27, 2006
Jkt 208001
through this temporary exemption
would enable the agency to make more
informed decisions regarding the effect
of flashing brake signaling systems on
motor vehicle safety. We also believe
that more recent data on the
effectiveness of flashing stop lamps
(compared to NHTSA’s 1981 large scale
field study) would be beneficial.
With respect to Candlepower
comments, we first note that the
statutory temporary exemption
provisions found in 49 U.S.C. 30113
provide for more than one basis for
granting a temporary exemption and
specifically contemplate limited
temporary exemptions for the purposes
of field evaluation of new motor vehicle
safety features.9 We also note that
vehicles equipped with this safety
feature are already being sold in Europe.
Therefore, this petition is not an attempt
to circumvent more restrictive European
regulations, as suggested by
Candlepower. Finally, we note that the
statute authorizing the agency to grant
temporary exemptions for the purposes
of field evaluation of new motor vehicle
safety features specifically contemplates
their use on U.S. roads. As the
petitioner indicated, considerable
research has already been performed.
However, to aid the agency in
evaluating the potential safety benefits
of brake lights that flash during extreme
deceleration, it would be beneficial to
obtain field data from a discreet group
of motor vehicles. This temporary
exemption, which would apply to up to
5,000 vehicles, affords the agency this
opportunity.
Candlepower raised certain concerns
regarding potential negative safety
consequences of the brake flashing
signaling system contemplated by the
petitioner. However, Candlepower has
not provided any data in support of
their position.
In consideration of the foregoing, the
agency is granting the MBUSA petition
for a temporary exemption from the
requirements of S5.5.10 of Federal
Motor Vehicle Safety Standard (FMVSS)
No. 108, Lamps, Reflective Devices, and
Associated Equipment in order to
facilitate the development and field
evaluation of new motor vehicle safety
feature providing a level of safety at
least equal to that of the standard.
In accordance with 49 U.S.C.
30113(b)(3)(B)(ii), MBUSA is granted
NHTSA Temporary Exemption No. EX
05–6, from Paragraph S5.5.10 of Federal
Motor Vehicle Safety Standard (FMVSS)
No. 108, Lamps, Reflective Devices, and
Associated Equipment. The exemption
9 See
PO 00000
49 U.S.C. § 30113(b)(3)(B)(ii).
Frm 00074
Fmt 4703
Sfmt 4703
4963
will remain in effect until January 23,
2008.
(49 U.S.C. 30113; delegations of authority at
49 CFR 1.50. and 501.8)
Issued on: January 23, 2006.
Jacqueline Glassman,
Deputy Administrator.
[FR Doc. E6–1079 Filed 1–27–06; 8:45 am]
BILLING CODE 4910–59–P
DEPARTMENT OF TRANSPORTATION
National Highway Traffic Safety
Administration
Petition To Modify an Exemption of a
Previously Approved Antitheft Device;
General Motors Corporation
National Highway Traffic
Safety Administration,Department of
Transportation (DOT).
ACTION: Grant of a petition to modify an
exemption from the Parts Marking
Requirements of a previously approved
antitheft device.
AGENCY:
SUMMARY: On July 12, 2005, the National
Highway Traffic Safety Administration
(NHTSA) granted in full General Motors
Corporation’s (GM) petition to exempt
the Chevrolet Cobalt vehicle line from
the parts-marking requirements of the
vehicle theft prevention standard (See
70 FR 40102). The exemption was
granted because the agency determined
that the antitheft device proposed to be
placed on the line as standard
equipment was likely to be as effective
in reducing and deterring motor vehicle
theft as compliance with the partsmarking requirements of the Theft
Prevention Standard. On August 24,
2005, GM petitioned the agency to
amend the exemption currently granted
for the Chevrolet Cobalt vehicle line.
NHTSA is granting in full GM’s petition
to modify the exemption because it has
determined that the modified antitheft
device to be placed on the Chevrolet
Cobalt line as standard equipment will
also likely be as effective in reducing
and deterring motor vehicle theft as
compliance with the parts-marking
requirements.
The exemption granted by this
notice is effective beginning with model
year (MY) 2006.
FOR FURTHER INFORMATION CONTACT: Ms.
Deborah Mazyck, Office of International
Policy, Fuel Economy and Consumer
Programs, NHTSA, 400 Seventh Street,
SW., Washington, DC 20590. Ms.
Mazyck’s phone number is (202) 366–
0846. Her fax number is (202) 493–2290.
SUPPLEMENTARY INFORMATION: On July
12, 2005, NHTSA published in the
DATES:
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[Federal Register Volume 71, Number 19 (Monday, January 30, 2006)]
[Notices]
[Pages 4961-4963]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E6-1079]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
National Highway Traffic Safety Administration
[Docket No. NHTSA-2005-22653, Notice 2]
Mercedes-Benz, U.S.A. LLC; Grant of Application for a Temporary
Exemption From Federal Motor Vehicle Safety Standard No. 108
AGENCY: National Highway Traffic Safety Administration (NHTSA), DOT.
ACTION: Grant of Application for a Temporary Exemption from S5.5.10 of
Federal Motor Vehicle Safety Standard No. 108.
-----------------------------------------------------------------------
SUMMARY: This notice grants the Mercedes-Benz, U.S.A. LLC (``MBUSA'')
application for a temporary exemption from the requirements of S5.5.10
of Federal Motor Vehicle Safety Standard (FMVSS) No. 108, Lamps,
Reflective Devices, and Associated Equipment. In accordance with 49 CFR
Part Sec. 555.6(b), the basis for the grant is to facilitate the
development and field evaluation of new motor vehicle safety feature
providing a level of safety at least equal to that of the standard.
Pursuant to Sec. 555.6(b)(5), MBUSA is permitted to sell not more than
2,500 exempted vehicles in any twelve-month period of the exemption.
Because the exemption period is 24 months, this grant affects up to a
total of 5,000 vehicles.
DATES: The exemption from S5.5.10 of FMVSS No. 108 is effective from
January 23, 2006 until January 23, 2008.
FOR FURTHER INFORMATION CONTACT: George Feygin in the Office of Chief
Counsel, NCC-112 Room 5215, 400 7th Street, SW., Washington, DC 20590
(Phone: 202-366-2992; Fax: 202-366-3820; E-Mail:
George.Feygin@nhtsa.dot.gov).
I. Background
MBUSA petitioned the agency on behalf of its parent corporation,
DaimlerChrysler AG.\1\ The petition seeks a temporary exemption from
S5.5.10 of Federal Motor Vehicle Safety Standard (FMVSS) No. 108. In
short, S5.5.10 specifies that with certain exceptions not applicable to
this petition, all lamps, including stop lamps must be wired to be
steady-burning.\2\ In order to develop and evaluate an innovative
flashing brake signaling system in the United States, MBUSA sought a
temporary exemption from the ``steady-burning'' requirement as it
applies to stop lamps. This system is currently available in Europe on
the S-class, CL-class, and SL-class Mercedes vehicles.
---------------------------------------------------------------------------
\1\ For more information on MBUSA, go to https://www.mbusa.com.
\2\ See S5.5.10 of 49 CFR 571.108. Turn signal lamps, hazard
warning signal lamps, school bus warning lamps must be wired to
flash. Headlamps and side marker lamps may be wired to flash for
signaling purposes. Motorcycle headlamps may be wired to modulate.
---------------------------------------------------------------------------
MBUSA stated that the system enhances the emergency braking signal
by flashing three stop lamps required by FMVSS No. 108 during strong
deceleration. In addition, after emergency braking, the flashing brake
signaling system automatically activates the hazard warning lights of
the stopped vehicle until it starts to move again or the lights are
manually switched off. The petitioner stated that this signaling system
reduces the following drivers' reaction time by attracting their
attention, and also enhances visibility of the stopped vehicle, thus
helping to reduce the incidence and severity of rear end collisions.
NHTSA previously denied petitioner's request to amend FMVSS No. 108
to allow flashing brake signaling systems. Among the reasons for the
denial was the need for additional data on safety benefits of flashing
brake lamps. The petitioner argued that granting this temporary
exemption would allow them to provide the information NHTSA found
lacking.
MBUSA requested a two-year exemption period. In accordance with the
requirements of 49 CFR Sec. 555.6(b)(5), MBUSA will not sell more than
2,500 exempted vehicles in any twelve-month period within the two-year
exemption period. For additional details, please see the MBUSA petition
at https://dms.dot.gov/search/searchFormSimple.cfm, Docket No. NHTSA-
2005-22653. The following (Parts II-VI) summarizes MBUSA's petition in
relevant part.
II. Description of the New Motor Vehicle Safety Feature
The petitioner states that its flashing brake signaling system
provides two innovative safety-enhancing features.
First, three stop lamps required by FMVSS No. 108 flash at a
frequency of 5 Hz in the event of strong deceleration. This occurs if
the velocity is >50 km/h (31 mph) and at least one of the following
conditions is met:
1. Deceleration is >7 m/s\2\; or
2. The brake assist function is active; or
3. The Electronic Stability Program (ESP) control unit detects a
panic braking operation.
The petitioner states that the activation criteria ensures that the
flashing brake signaling system is only activated when truly needed.
Thus, the brake lights will flash only in severe braking situations,
and will flash at a relatively high frequency that allows for fast
recognition. Further, using the panic brake signal from the ESP control
unit as a trigger would activate the system only when the achievable
deceleration is substantially smaller than the demanded one. Thus, the
stop lamps would not flash in routine situations.
Second, after emergency braking, the system automatically activates
the hazard warning lights of the stopped vehicle until it starts to
move again, or the lights are manually switched off.
III. Potential Benefits of the New Motor Vehicle Safety Feature
The petitioner states that the flashing brake signaling system
provides important safety enhancements not found in a vehicle equipped
with a traditional brake signaling system. First, the flashing system
reduces the following driver's reaction time and encourages maximum
deceleration of following vehicles. The petitioner expects especially
strong benefits during adverse weather conditions and for inattentive
drivers. Second, the activation of hazard warning lamps on the stopped
vehicle also enhances vehicle recognition after it comes to a complete
stop. The petitioner believes that together, these features will help
to reduce rear end collisions and improve safety.
The petitioner acknowledged the agency's longstanding restriction
on flashing stop lamps, in the interest of standardized, instantly
recognizable lighting functions. However, MBUSA indicated that its
system will be easily recognizable, and would not interfere with
NHTSA's objectives since activation of the flashing brake signaling
system would be infrequent.
[[Page 4962]]
IV. The Petitioner's Research and Testing
The petitioner stated that the development of the flashing brake
signaling system is based on careful research and testing. The
activation criteria for the flashing brake lights were established with
the help of a driver behavior study. The petitioner further states that
field studies have demonstrated that the brake light system can
significantly reduce driver reaction times.
MBUSA used a driver braking behavior study to understand how often
rapid deceleration braking occurs in the United States. The study
followed 96 subjects using 15 Mercedes-Benz vehicles equipped with a
driver behavior and vehicle dynamics recorder. The study indicated that
one emergency braking maneuver occurred for every 2,291 miles driven.
The study also suggested that, based on the criteria described in the
previous section, only 23 out of 100,000 braking maneuvers would
activate the flashing stop lamps. The petitioner concludes that the
flashing brake light will occur rarely, which will help to avoid
``optical pollution'' and enhance the effectiveness of the brake light
system.\3\
---------------------------------------------------------------------------
\3\ MBUSA submitted supporting documentation, including the
driver behavior study, under the claim of confidentiality. NHTSA
granted the confidentiality request in part and denied it in part.
The time for MBUSA to seek reconosideration of our confidentiality
determination has not elapsed. In accordance with our regular
procedures, the supporting documentation has not been placed in the
public docket.
---------------------------------------------------------------------------
MBUSA sponsored additional field and driving simulator studies,
which showed that ``appropriately designed flashing brake lights
significantly reduce drivers'' reaction times and thus can reduce the
incidence and severity of rear-end collisions.'' \4\ Specifically, the
study compared reaction times in emergency braking situations among
conventional brake lights, conventional brake lights combined with
hazard warning lights, flashing brake lights with a flashing frequency
of 4 Hz, and flashing brake lights with a flashing frequency of 7 Hz.
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\4\ The study was conducted by Dr. Joerg Breuer and Thomas
Unselt.
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The petitioner states that the study showed that flashing brake
lights reduce driver reaction time by an average of 0.2 seconds, which
is a reduction sufficient to reduce meaningfully the number and/or
severity of rear-end collisions. MBUSA argues that even greater
reduction in reaction time would occur under real-world driving
conditions, where drivers are less focused on the driving task and
subject to more sources of distraction. The study also showed positive
effects from the flashing brake light signal under adverse weather
conditions and in distraction situations. Finally, the test subjects
expressed a preference for flashing brake lights when compared to other
brake light signals.
The petitioner states that the Japanese Ministry of Land,
Infrastructure and Transportation conducted a study to evaluate the
validity and operating conditions of two types of emergency brake light
displays, one that flashes upon sudden braking, and one that enlarges
the lighting area of the brake lamps. The study found that flashing
brake lamps reduced following drivers' response time in the drivers'
peripheral fields of vision. The study also showed that shorter
flashing intervals are more effective. Finally, the study indicated
that an emergency brake light display that enlarges the lighting area
is not as effective as a flashing brake lamp.
V. How Will a Temporary Exemption Facilitate the Development and Field
Evaluation of a New Motor Vehicle Safety Feature?
The petitioner stated that it intends to monitor the exempted
vehicles and study the effectiveness of the flashing brake signaling
system. First, MBUSA will gather information about rear-end collisions
of vehicles equipped with the system. This information will be combined
with the parallel results from the European fleet and, according to the
petitioner, should prove to be valuable in evaluating the anticipated
safety benefits of the new brake light system. Second, the test fleet
should enable MBUSA to evaluate acceptance of the flashing stop lamps
among the American public.
VI. Why Granting the Petition for Exemption Is in the Public Interest
As indicated above, the petitioner argued that granting the
requested exemption from FMVSS No. 108 would enable them to continue
developing and evaluating its innovative flashing brake signaling
system, thus contributing substantially to ongoing efforts to consider
the effectiveness of enhanced lighting systems in reducing rear-end
crashes. MBUSA believes that the system will help to reduce
significantly following driver reaction times, thus reducing rear end
collisions.
The petitioner also noted that rear end collisions are a
significant traffic safety concern,\5\ particularly in dense traffic
areas, and an important cause of rear end collisions is a following
driver's failure to detect that a leading vehicle has performed an
emergency braking action. MBUSA believes that an enhanced braking
signal that alerts following drivers to urgent braking situations has
the potential to significantly enhance safety.
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\5\ NCSA 2004 Traffic Safety Facts show 1,334,000 rear
collisions involvoing passenger cars and 1,060,000 rear collisions
involving light trucks (see Tables 42 and 44 at: https://www-
nrd.nhtsa.dot.gov/pdf/nrd-30/NCSA/TSFAnn/TSF2004EE.pdf).
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VII. Comments Regarding the MBUSA Petition
NHTSA published a notice of receipt of the application on October
7, 2005, and afforded an opportunity for comment.\6\ The agency
received two comments, from Candlepower, Inc.\7\ and Richard L. Van
Iderstine.\8\
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\6\ See 70 FR 58786.
\7\ See Docket Nos. NHTSA-2005-22653-4.
\8\ See Docket Nos. NHTSA-2005-22653-3.
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In his comments, Mr. Van Iderstine argued that NHTSA only recently
denied a petition to amend S5.5.10 of FMVSS No. 108 in order to allow
flashing brake signaling systems being considered in this document. In
short, Mr. Van Iderstine asked what has changed since the denial of
that petition.
In its comments, Candlepower argued that temporary exemptions
should be granted ``only in extreme and unusual circumstances, e.g.,
evidenced, demonstrable manufacturer hardship.'' It also argued that
MBUSA's petition is ``tantamount to requesting permission to use
American roads as a research laboratory, possibly because European
regulations in force in most of the rest of the world are more
restrictive regarding nonstandard lighting functions.'' Further, it
argued that a novel, nonstandard signal, such as flashing stop lamp,
would cause the observing driver involuntarily to pause and attempt to
comprehend the signal. It also argued that unlike Europe where turn
signals must be amber and not red, in U.S., a flashing stop signal
could be mistaken for a turn signal. Finally, Candlepower cautioned
that new lighting devices tend to spawn ``poor-quality, noncompliant,
unsafe copies in the aftermarket.''
VIII. The Agency's Decision and Response to Public Comments
The petitioner has met the burden of showing that an exemption
would make easier the field evaluation of a new motor vehicle safety
feature providing, within the context of 49 CFR part 555, ``a safety
level at least equal to that of the standard.'' This new safety device
is the same as current stop lamps, except
[[Page 4963]]
that it flashes during emergency braking. We note, however, that some
of the benefits associated with signal lamps relate to standardization.
We have not made any determination as to whether it would be
appropriate to permit flashing stop lamps more generally. Instead, the
granting of this petition will help the agency gather additional
information necessary to evaluate more fully the effects of flashing
brake signaling systems on motor vehicle safety.
As required by Sec. 555.6(b), MBUSA described the flashing brake
signaling system and provided research, development, and testing
documentation. This information included a detailed description of how
a vehicle equipped with the MBUSA flashing brake signaling system
differs from one that complies with the standard. MBUSA also explained
how an exemption would facilitate their safety research efforts.
Specifically, MBUSA will gather information about rear-end collisions
of vehicles equipped with the system. This information will be combined
with the parallel results from the European fleet in order to provide
data upon which the agency may base its evaluation of potential safety
benefits of flashing brake signals.
Based on the petitioner's driver behavior study and other
supporting research, we tentatively conclude that the flashing brake
signaling system provides the level of safety that is at least equal to
that of systems that comply with FMVSS No. 108.
Finally, we believe that an exemption is in the public interest
because the new field data obtained through this temporary exemption
would enable the agency to make more informed decisions regarding the
effect of flashing brake signaling systems on motor vehicle safety.
With respect to Mr. Van Iderstine's comments, we note that the
agency decision is fully consistent with our previous decision not to
amend FMVSS No. 108. Instead of a broad and permanent change in the
long-standing policy regarding flashing stop lamps, this document
grants a narrow temporary exemption to a discreet group of (at most)
5,000 vehicles. In denying the petition to amend FMVSS No. 108, we
indicated that NHTSA has been conducting research related to signal
enhancements at the Virginia Tech Transportation Institute, and also
analyzing crash and ``close call'' data from a 100-car naturalistic
driving study to determine the potential of enhanced rear signaling as
a means to reduce rear crashes. Together with that information, we
believe that the field data obtained through this temporary exemption
would enable the agency to make more informed decisions regarding the
effect of flashing brake signaling systems on motor vehicle safety. We
also believe that more recent data on the effectiveness of flashing
stop lamps (compared to NHTSA's 1981 large scale field study) would be
beneficial.
With respect to Candlepower comments, we first note that the
statutory temporary exemption provisions found in 49 U.S.C. 30113
provide for more than one basis for granting a temporary exemption and
specifically contemplate limited temporary exemptions for the purposes
of field evaluation of new motor vehicle safety features.\9\ We also
note that vehicles equipped with this safety feature are already being
sold in Europe. Therefore, this petition is not an attempt to
circumvent more restrictive European regulations, as suggested by
Candlepower. Finally, we note that the statute authorizing the agency
to grant temporary exemptions for the purposes of field evaluation of
new motor vehicle safety features specifically contemplates their use
on U.S. roads. As the petitioner indicated, considerable research has
already been performed. However, to aid the agency in evaluating the
potential safety benefits of brake lights that flash during extreme
deceleration, it would be beneficial to obtain field data from a
discreet group of motor vehicles. This temporary exemption, which would
apply to up to 5,000 vehicles, affords the agency this opportunity.
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\9\ See 49 U.S.C. Sec. 30113(b)(3)(B)(ii).
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Candlepower raised certain concerns regarding potential negative
safety consequences of the brake flashing signaling system contemplated
by the petitioner. However, Candlepower has not provided any data in
support of their position.
In consideration of the foregoing, the agency is granting the MBUSA
petition for a temporary exemption from the requirements of S5.5.10 of
Federal Motor Vehicle Safety Standard (FMVSS) No. 108, Lamps,
Reflective Devices, and Associated Equipment in order to facilitate the
development and field evaluation of new motor vehicle safety feature
providing a level of safety at least equal to that of the standard.
In accordance with 49 U.S.C. 30113(b)(3)(B)(ii), MBUSA is granted
NHTSA Temporary Exemption No. EX 05-6, from Paragraph S5.5.10 of
Federal Motor Vehicle Safety Standard (FMVSS) No. 108, Lamps,
Reflective Devices, and Associated Equipment. The exemption will remain
in effect until January 23, 2008.
(49 U.S.C. 30113; delegations of authority at 49 CFR 1.50. and
501.8)
Issued on: January 23, 2006.
Jacqueline Glassman,
Deputy Administrator.
[FR Doc. E6-1079 Filed 1-27-06; 8:45 am]
BILLING CODE 4910-59-P