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Revisions of TMC Recommended Practice RP-404 ‘Truck and Truck Tractor Access Systems’
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Abstract
Originally written in 1976 and previously revised in 1983, The Maintenance Council (TMC) Recommended Practice RP-404B is intended to enhance the safety of motor carrier employees by providing guidance regarding the purchase and use of access systems on heavy truck and truck tractors. Compliance with the recommended practice is intended to permit anyone entering or exiting a cab to have three limbs in contact with the truck or truck-tractor at arty time. The scope of the recommended practice covers access systems to the cab and rear of cab areas of all types of heavy trucks and truck tractors, in contrast to Bureau of Motor Carrier Safety (BMCS) regulations which applies only to Cab Over Engine (COE) tractors. The Maintenance Council recommended practice also varies from the BMCS requirements in that it remains a design oriented document. This paper discusses the history and technical content of the recommended practice, and also discusses the rationale for the most recent changes to the document. Finally, specific needs for further research are discussed.
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Citation
Rhoades, T. and Miller, J., "Revisions of TMC Recommended Practice RP-404 ‘Truck and Truck Tractor Access Systems’," SAE Technical Paper 892523, 1989, https://doi.org/10.4271/892523.Also In
References
- Irvine C.H. “Driver Fails While Mounting or Dismounting Cab Over Engine Tractor Trailer Cabs” Project 66-8 Final Report, Liberty Mutual Insurance Company March 10 1967
- Bureau of Motor Carrier Safety “Slips and Falls - Truck Related Personal Injury Accidents” July 1977
- Regulated Common Carriers Conference, RCCC Recommended Practice PR 404 - Cab Mounting Steps January 1976
- Bureau of Motor Carrier Safety “Advance Notice of Proposed Rule Making Requiring Non-Slip Surfaces and Handholds for Drivers of Commercial Motor Vehicles” May 31 1974
- Bureau of Motor Carrier Safety “Step, Handhold, and Deck Requirements on Commercial Motor Vehicles” July 26 1979
- The Maintenance Council, TMC Recommended Practice RP404A - Cab Mounting Steps, Issued 1983
- The Maintenance Council, TMC Recommended Practice RP 404B - Truck and Truck Tractor Access Systems, issued April 1989
- Anon “Step & Grab-Handle System A Minor Item? Better Check Again” Diesel Equipment Superintendent, August 1975
- Anon “Cab Step and Grab Handle Update - Recommended Practice #404 Adopted at December RCCC Meeting” Diesel Equipment Superintendent February 1976
- Bureau of Motor Carrier Safety, 49 CFR 399 Subpart L -Step, Handhold, and Deck Requirements for Commercial Vehicles.
- U.S. Army “Specification, Body Van, Vehicle Mounted, General Specifications for,” August 12 1976
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- Society of Automotive Engineers, SAE Recommended Practice J185 - Access Systems for Off-Road Machines June 1981
- Jack D. Estes H. Grace P. “Operator Grip Strength” Automotive Safety Research Office, Ford Motor Company May 19 1978
- Miller J.M. ”‘Slippery’ Work Surfaces: Towards a Performance Definition and Quantitative Coefficient of Friction Criteria” J. Safety Research 14 1983 145 158
- Rhoades T.P. Miller J.M. “Measurement and Comparison of ‘Required’ versus ‘Available’ Slip Resistance” Proceedings of the 21st Annual Meeting of the Human Factors Association of Canada September 1988
- Miller J.M. Rhoades T.P. Lento M.R. “Slip Resistance Predictions for Various Metal Step Materials, Shoe Soles and Contaminant Conditions” Society of Automotive Engineers, SAE Technical Paper 872288 November 1987
- Lichty M.E. Rosenkrantz D.J. “The Effect of Open Area on the ‘Self-Cleaning’ Characteristic of Vehicular Walking Surfaces” Society of Automotive Engineers, SAE Technical Paper 872286 November 1987
- Heglund R.E. “Falls Entering and Exiting Heavy Truck Cabs” Society of Automotive Engineers, SAE Technical Paper 872287 November 1987