lighting chart

Item on the Vehicle
Quantity
Location
Position
Required on
Headlamps 2 at least front on front at same height
equal # on each side
A.B.C
Turn Signal (Front) 2 amber at or near front one on each side A,B,C
Identification lamp (front) 3 amber front verticle centerline B,C
Tail Lamp 2 red rear one on each side A,B,C,D,E,F,G,H
Stop Lamp 2 red rear one on each side A,B,C,D,E,F,G
Clearance Lamp 2 amber front one on each side to indicate width B,C,D,G,H
Side Marker, intermediate 2 amber midpoint one on each side if over 30' in length A,B,D,F,G
Reflector, intermediate 2 amber midpoint one on each side if over 30' in length A,B,D,F,G
Reflector, rear 2 red rear one on each side A,B,C,D,F,G
Reflector, rear side 2 red as far to the rear as practicable one on each side A,B,D,F,G
Reflector, front side 2 amber as far to the front as practicable one on each side A,B,C,D,F,G
License plate lamp 1 white   at rear license plate A,B,C,D,F,G
Side marker lamp front 2 amber as far to the front as practicable one on each side A,B,C,D,F
Side marker lamp rear 2 red as far to the rear as practicable one on each side A,B,D,F,G
Turn Signal rear 2 amber or red rear one on each side A,B,C,D,E,F, G
Identification lamp rear 3 red rear verticle centerline  
Hazard lamps 2 red rear one on each side A,B,C,D,E
  2 amber front one on each side F,G
Backup lamp 1 white rear rear A,B,C
Parking lamp 2 amber or white front one on each side A

A - Small buses & trucks less than 80" wide
B - Buses & Trucks over 80" wide
C - Truck tractors
D - Trailers 80" or more wide
E - Convertor dolly
F - Trailers under 80" wide
G - Pole Trailers
H - Projecting loads

See Table One 393.11 For Complete Lighting Chart