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Federal Lighting Requirements For Trailers

IMPORTANT NOTE: Every lamp, reflex reflector, and conspicuity treatment must be permanently attached in the location specified below and must comply will 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 the vehicle's 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.

BASIC EQUIPMENT REQUIRED ON ALL TRAILERS

DESCRIPTION   MANDATORY REQUIREMENTS

Area

Equipment
SAE Lens
Coating
Functional
Purpose
 
Quantity

Color

Location
Height mm(in.)
from the ground
Lighting identification 1 Tail Lamps (T) Indicate Vehicle's
presence and width
  Minimum
2
Red On the Rear - Symmetrical
as far apart as practicable
380-1830
(15-72)
Stop Lamps (S) Indicate Braking   Minimum
2
Red On The Rear - Symmetrical
as far apart as practicable
380-1830
(15/72)
Rear
Turn Signal Lamps
(I) Indicate Direction Of Turn   Minimum
2
Red or
Yellow
On The Rear - Symmetrical
as far apart as practicable
380-2110
(15-83)
Rear
Reflex Reflectors
(A) Indicate Vehicle's
presence and width
  Minimum
2
Red On The Rear - Symmetrical
as far apart as practicable
facing rearward
380-1530
(15-80)
Lighting identification 1 License Plate Lamp(s) (L) Illuminates License Plate   Minimum
1
White On the Rear - above or at
the sides of license plate
No Requirement
Lighting identification 1 Rear Side
Marker Lamps
*photometrically certified
at installation angle
(P2, PC* or
P3, PC2*)
Front and rear side marker lamps
indicate vehicle's presence
and length
  Minimum
2
Red Each side at rear
as far back as practicable
380-1530 (15-60)
No Max. For Veh.
under 2032mm(82") wide
Rear Side
Reflex Reflectors
(A) Rear side reflex reflectors
indicate vehicle's presence
and length
  Minimum
2
Red Each side at rear
as far back as practicable
facing sideward
380-1830
(15/72)
Lighting identification 1
Federal Lighting Specifications For Trailer Front Side Markers Front Side
Marker Lamps
*photometrically certified
at installation angle
(P2, PC* or
P3, PC2*)
Front and rear side marker lamps
indicate vehicle's presence
and length
  Minimum
2
Yellow Each side at Front
as far forward as practicable
380 (15)
Minimum
Federal Lighting Specifications For Trailer Front Side Reflex Reflectors Front Side
Reflex Reflectors
(A) Rear side reflex reflectors
indicate vehicles's presence
and length
  Minimum
2
Yellow Each side at front
as far forward as practicable
facing sideward
380-1530
(15-60)

ADDITIONAL EQUIPMENT FOR TRAILERS EXCEEDING THE FOLLOWING PARAMETERS

Lenght 8.1m (30 ft.) or longer
DESCRIPTION   MANDATORY REQUIREMENTS

Area

Equipment
SAE Lens
Coating
Fuctional
Purpose
 
Quanitity

Color

Location
Height mm(in.)
from the ground
Lighting identification 1
Federal Lighting Specifications For Trailer Front Side Markers Intermediate Side
Marker Lamps
*photometrically certifed
at installation angle
(P2, PC* or
P3, PC2*)
Indicate presence
of a long vehicle
  Minimum
2
Amber Each side near center
facing sideward
380 (15)
Minimum
Federal Lighting Specifications For Trailer Front Side Reflex Reflectors Intermeidate Side
Reflex Reflectors
(A) Indicate presence
of a long vehicle
  Minimum
2
Amber Each side near center
facing sideward
380-1530
(15-60)

Width 2032mm (80 in.) or wider

DESCRIPTION   MANDATORY REQUIREMENTS

Area

Equipment
SAE Lens
Coating
  Fuctional
Purpose

Quanitity

Color

Location

Height
Lighting identification 1 Rear
Clearance Lamps
*photometrically certifed
at installation angle
(P2, PC* or
P3, PC2*)
  Show vehicle's width
MAY NOT be combined
with tail lamps
Minimum
2
Red At widest point - symmetrical
on the rear or near the rear
facing rearward
As high as practicable
may be lower only if
ID lamps are at the top
Lighting identification 1 Rear
Identification (ID) Lamps
(P2 or P3)   Indicate presence
of a wide vehicle
Exactly
3
Red On the rear - center horizontally
spacked 150mm (6 in)
to 300mm (12 in) apart
facing rearward
At the top -
may be lower if door hearder
narrower than 25mm
Lighting identification 1 Front
Clearance Lamps
*photometrically certifed
at installation angle
(P2, PC* or
P3, PC2*)
  Show vehicle's width Minimum
2
Amber At widest point - symmetrical
on the front or near the front
facing forward
As high as practicable

Width 2032mm (80 in.) or wider and GVWR 4538 kg (10,000 lb.) or more

DESCRIPTION   MANDATORY REQUIREMENTS
Area Conspicuity Treatement   DOT Coding Quantity Color Location Height Options
Lighting identification 1 Rear Upper
Body Markings
  DOT-C, DOT-C2
DOT-C3, 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 consipicity
treatment may
also be solid white,
solid yellow, or
white and yellow
Lighting identification 1 Bumper Bar
Markings
  DOT-C, DOT-C2
DOT-C3, DOT-C4
Continuous Red/White On the rear bumper bar's
horzontal element
full width - facing rearward
No requirement
Lighting identification 1 Rear Lower
Body Markings
  DOT-C, DOT-C2
DOT-C3, DOT-C4
Continuous Red/White (see options) On the rear
rull width of the vehicle
facing rearward
As horizontal as practicable and
as close as practicable to the range
of 375 to 1525mm from the ground
Lighting identification 1 Side
Markings
  DOT-C, DOT-C2
DOT-C3, DOT-C4
(see location) Red/White (see options) Each side - facing sideward
continuous, ore evenly spaced
over minimum of 50% of lengh
starts and ends as close to the
front and rear of the vehicle as
practicable
As horizontal as practicable and
as close as practicable to the range
of 375 to 1525mm from the ground
NOTE: The edge of red conspicuity tap shall not be closer than 75mm to the edge of any amber lamp and the edge of white conspicuity tape shall not be closer than 75mm to the edge of any lamp.
Click To Enlarge
Trailer Lighting Specifications Area 3, 8, 4a-b Trailer Lighting Specifications Area 1, 2 6 7 Trailer Lighting Specifications Area 3, 8, 4a-b Trailer Lighting Specifications Area 1, 2, 6, 7 Trailer Lighting Specifications Area 3, 8, 4a-b Trailer Lighting Specifications Area 1, 2, 6, 7 Trailer Lighting Specifications Area 3, 8, 4a-b Trailer Lighting Specifications Area 1, 2, 6, 7 Trailer Lighting Specifications Area 1, 2, 6, 7, 9, 10 Trailer Lighting Specifications Area 3, 8, 4a-b, 5a-b, 12 Trailer Lighting Specifications Area 1, 2, 6, 7 Trailer Lighting Specifications Area 3, 8, 4a-b Trailer Lighting Specifications Area 3, 4a-b, 5a-b, 8, 12 Trailer Lighting Specifications Area 1, 2, 6, 7, 9, 10, 11 Trailer Lighting Specifications Area 3, 4a-b, 5a-b, 8, 12 Trailer Lighting Specifications Area 1, 2, 6, 7, 9, 10
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