IMPORTANT NOTE: Every lamp, reflex reflector, and conspicuity treatment 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 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
ADDITIONAL EQUIPMENT FOR TRAILERS EXCEEDING THE FOLLOWING PARAMETERS
Length 9.1m (30 ft.) or longer
Width 2032mm (80 in.) or wider
Width 2032mm (80 in.) or wider AND GVWR 4536 kg (10,000 lb.) or more
The above tables are summarized from FEDERAL LIGHTING REQUIREMENTS FOR TRUCKS, BUSES, MPVS AND TRAILERS of Federal/Canada Motor Vehicle Safety Standard 108. For more and complete requirement please check out the website of National Highway Traffic Safety Administration of Canada. https://www.nhtsa.gov/