Federal Motor Vehicle Safety Standards; Stability and Control of Medium and Heavy Vehicles During Braking

概要

This document responds to petitions for reconsideration of a March 1995 final rule amending Standard No. 121, Air Brake Systems, to require, among other things, the installation of antilock brake systems (ABS) on medium and heavy vehicles and the installation of external ABS malfunction indicator lamps on trailers and trailer converter dollies. This document proposes to amend the Standard to specify the location, color, activation protocol, and intensity of the lamps.