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TRAILERS: FEDERAL LIGHTING EQUIPMENT LOCATION REQUIREMENTS
NOTE: All information provided by the National Highway Traffic Safety Administration.
For full and up-to-date information, visit
http://www.nhtsa.gov
 
| IMPORTANT
NOTE: Every lamp, reflex reflector, and
conspicuity treatment (device) must be permanently attached in the location specified
below and must comply with all applicable requirements prescribed for it by FMVSS/CMVSS
108. The face of any device on the front/rear and sides should be, respectively
perpendicular and parallel to vehicle centerline, unless it is photometrically certified
at installation angle. No part of the vehicle shall prevent any device from meeting its
prescribed requirements unless an auxiliary device meeting all prescribed requirements is
installed. IN CANADA: Manufacturers and importers of vehicles must have the proper
certification test records demonstrating compliance of lighting components with all
prescribed requirements.
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BASIC EQUIPMENT REQUIRED ON ALL
TRAILERS
ADDITIONAL EQUIPMENT FOR TRAILERS
EXCEEDING THE FOLLOWING PARAMETERS
LENGTH 9.1 m (30 ft.) OR LONGER
| D
E S C R I P T I O N |
M
A N D A T O R Y
R E Q U I R E M E N T S |
| Area |
Equipment |
(SAE Lens Coding) |
Functional
Purpose |
Quantity |
Color |
Location |
Height mm (in.)
from the ground |

 |
Intermediate Side Marker Lamps |
(P2
or P3) |
Indicate
presence of a long vehicle |
Minimum
2 |
Yellow
|
Each
side near center - facing sideward |
380
(15) minimum |

 |
Intermediate Side Reflex Reflectors |
(A) |
Indicate
presence of a long vehicle |
Minimum
2 |
Yellow
|
Each
side near center - facing sideward |
380-1530
(15-60) |
WIDTH 2.032 m (80 in.) OR WIDER
WIDTH 2.032 m (80 in.) OR WIDER AND
GVWR 4536 kg (10,000 lb.) OR MORE
| D E S C R I P T I O N |
M A N D A T O R Y R E Q U I R E M E N T S |
| Area |
Conspicuity
Treatment |
DOT
Coding |
Quantity |
Color |
Location |
Height |
OPTIONS |
 |
Rear Upper Body Marking |
DOT-C,
DOT-C2,
DOT-C3, or
DOT-C4 |
Exactly
2 pairs of 300mm long strips |
White
|
On
the rear upper corners - facing rearward |
At
the top |
Reflex reflectors may not be required if they are replaced, in their required
location, with conspicuity treatment
Optional in Canada Rear lower body and side
conspicuity treatment may also be solid white, solid yellow, or white and yellow.
|
 |
Bumper Bar Marking |
Continuous |
Red/White |
On
the rear bumper bar's horizontal element - full width - facing rearward |
No
requirement |
 
|
Rear Lower Body Marking |
DOT-C,
DOT-C2,
DOT-C3, or
DOT-C4 |
Continuous |
Red/White
see options |
On
the rear - full width of the vehicle - facing rearward |
As
horizontal as practicable and as close as practicable to the range of 375 to 1525 mm from
the ground |
 |
Side Marking |
see
location |
Red/White
see options |
Each
side - facing sideward - continuous, or evenly spaced over minimum of 50% of length,
starts and ends as close to the front and rear or vehicle as practicable |
As
horizontal as practicable and as close as practicable to the range of 375 to 1525 mm from
the ground |
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| This table summarizes lighting equipment
requirements contained in Federal/Canada Motor Vehicle Safety Standard 108. For complete
compliance requirements consult Title 49 - Code of Federal Regulations-Section 571.108
(USA) or Section 108 of the Motor Vehicle Safety Regulations (Canada). |
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