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A Fleet Operator's Comments on FMVSS 121 Braking System Compatibility
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English
Abstract
Federal Motor Vehicle Safety Standard (FMVSS) 121 has introduced many new and varied problems for vehicle manufacturers, component manufacturers, and vehicle operators. An area of great concern to vehicle operators, particularly fleets, is the question of compatibility associated with antilock system intermix, old and new vehicle intermix, and control standardization.
This paper discusses the compatibility related problems observed during limited fleet tests and evaluation of FMVSS 121 braking systems. Test data, observations, and possible solutions are presented with emphasis on the need for more extensive investigation in this area to ensure that the goal of FMVSS 121-increased truck safety-is achieved.
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Citation
Lewis, J., "A Fleet Operator's Comments on FMVSS 121 Braking System Compatibility," SAE Technical Paper 740049, 1974, https://doi.org/10.4271/740049.Also In
References
- Kaye M. C. “United Parcel Service Anti-Skid System Tests.” Freightliner Corp. December 1971
- Hopkins G. “UPS Testing of Secondary Air Brake Systems Which Comply to FMVSS 121.” Brake Div., Eaton Corp. August 1973
- “Performance and Compatibility of Commercial Brake Anti-Skid Systems.” Film United Parcel Service May 1973
- Stearns G. W. “Intermixing of Tractors and Trailers Equipped with Existing and FMVSS 121 Braking Systems.” Paper 730699 SAE West Coast Meeting Portland August 1973