Under 80 Inches

 

Over 80 Inches

 

 Click On Number To View The Corresponding Light

 

TRAILER LIGHTING REQUIREMENTS
FMVSS 108
 

 

All Trailers

 

 Left Side

 
#
 
Function
 Color 
 
Visibility Requirements

 Right Side 

 Under 80 in Trailer Left Side Light W/ License Light  
1
 
Tail
 
Red
 45 Degrees Left and Right
10 Degrees Up and Down
 
Under 80 in Trailer Right Side Light
 
2
 
Stop
 
Red 
  
45 Degrees Left and Right
10 Degrees Up and Down
 
3
 
Turn
 
Red
  
45 Degrees Left and Right
10 Degrees Up and Down
 
4
 
Rear Reflex
 
Red
  
20 Degrees Left and Right
10 Degrees Up and Down
 
5
 
Rear 
Sidemarker
 
Red
 
45 Degrees Left and Right
10 Degrees Up and Down
 
6
 
Rear Side 
Reflector
 
Red
 
20 Degrees Left and Right
10 Degrees Up and Down
Trailer Sidemarker Light
 7
 
Front 
Sidemarker
 
Amber
 45 Degrees Left and Right
10 Degrees Up and Down
Trailer Sidemarker Light
 
8
 
Front Side
Reflector
 
Amber
 
20 Degrees Left and Right
10 Degrees Up and Down

Under 80 in Trailer Left Side Light W/ License Light 

 9
 
Liscence 
Light
 
Clear
 
Above or
Side Illumination

 N/A

 

 

OVER 80" LIGHTING 

 Left Side

 #

 Function

Color 

Visibility
Requirements

 Right Side

 Over 80 in Trailer Left Side Light  
10
 
Rear 
Clearance Light
 
Red
 
45 Degrees Left and Right
10 Degrees Up and Down

Over 80 in Trailer Right Side Light 

Center Identification Bar

 
11
 
Rear 
Identification Light
 
Red
 
45 Degrees Left and Right
10 Degrees Up and Down

Center Identification Bar 

 Trailer Clearance Light

 
12
 
Front  Clearance Light
 
Amber
 
45 Degrees Left and Right
10 Degrees Up and Down

Trailer Clearance Light 

 

 

 Interpretations

 A  
United States
 The front sidemarker must be mounted so that it is visible from 45 degrees left and right without obstruction from the trailer or tow vehicle to comply with NHTSA's interpretation of "as far forward as practicable."