On August 8, 1996, the NHTSA published a last rule requiring that truck tractors manufactured on or after July 1, 1997, be outfitted with crimson-and-white retroreflective material much like that required on the rear of the trailers they tow to extend nighttime conspicuity. Manufacturers could choose either retroreflective sheeting or reflex reflectors. In the case of truck tractors delivered with a brief mudflap arrangement slightly than everlasting gear, the requirement for retroreflective materials near the top of the mudflap could also be happy with materials carried by the short-term mudflap brackets that are transferable to the permanent mudflap system. Retroreflective material can also be required close to the top of the cab in a sample just like that used on trailers. (This can be a summary of the regulation.
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The rear of every trailer and Катафоты треугольные для грузовых машин semitrailer have to be equipped with retro reflective sheeting (or reflex reflectors). Every strip of retro reflective sheeting (or reflex reflector) must be positioned as horizontally as practicable, extending throughout the complete width of the trailer, beginning and ending as near the excessive edges as practicable. The centerline for each of the strips of retro reflective sheeting (or each reflex reflector) must be between 375 mm (15 inches) and 1,525 mm (60 inches) above the street floor when measured with the trailer empty or unladen, or as shut as practicable to this space.