This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Commercial Vehicle Brake Testing - Part 1: Visual Inspection Versus Performance-Based Test
Annotation ability available
Sector:
Language:
English
Abstract
There is recent interest in examining whether performance-based brake tests are advantageous compared to presently used visual inspections for safety checks of on-the-road commercial vehicles. In this first of a series of two papers, the basic features of visual inspections and performance-based brake tests are presented and discussed. It is shown that the visual inspection method is inherently “predictive” in nature and therefore conservative. A performance-based brake test is objective but not predictive. The performance based test may reveal safety-related defects only for the specific vehicle load configuration and operating condition. The presentation is concluded with a discussion of what may be required for future enforceable use of performance-based brake testing devices for “on the road” inspections of commercial vehicles. In the short term, use of performance based testing will depend on correlation of test results with presently enforceable visual methods or standards. In the long term, development and acceptance of additional safety-related criteria would be appropriate. These factors, along with preliminary results of performance-based brake tester evaluations, are presented in Part 2 of this series.
Recommended Content
Authors
Citation
Shaffer, S. and Alexander, G., "Commercial Vehicle Brake Testing - Part 1: Visual Inspection Versus Performance-Based Test," SAE Technical Paper 952671, 1995, https://doi.org/10.4271/952671.Also In
Bus Design and Developments in Drivetrains, Safety, and Fleet Management
Number: SP-1124; Published: 1995-10-01
Number: SP-1124; Published: 1995-10-01
References
- Federal Motor Vehicles Safety Standard 121 - Air Brake Systems
- Economic Commission of Europe Regulation - 13
- European Economic Community Directive 71/320
- Flick, M. “Evaluation of Hunter Heavy Duty Plate Tester,” COT HS 808 275 February 1995
- “Evaluation of Performance-Based Brake Testing Technologies for Commercial Vehicles,” DOT Interim Report October 1995