Transport i bezpieczeństwo · 10.11.2004

Federal Motor Vehicle Safety Standards; Accelerator Control Systems

In July 2002, NHTSA published an NPRM proposing to update Federal Motor Vehicle Safety Standard (FMVSS) No. 124, the agency's safety standard for vehicle accelerator control systems, to make explicit its applicability to new types of engines and throttle controls, particularly electronic ones. The proposal included a number of new test procedures to address different types of powertrain technology. One of those test procedures involved measurement of engine speed under realistic powertrain load conditions on a chassis dynamometer. That procedure was "technology-neutral" and was included to allow testing of vehicles that could not readily be tested by one of the other procedures included in the proposal that were technology specific. As discussed in this document, the agency is withdrawing the NPRM while it conducts further research on issues relating to chassis dynamometer-based test procedures for accelerator controls.