This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Seat Design: An Important Consideration for Occupant Safety in Public Transit Buses
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 07, 2008 by SAE International in United States
Annotation ability available
BC Transit, a crown corporation in the province of British Columbia, has reported injuries resulting from passengers sliding off seats during extreme braking and/or turning maneuvers. The corporation was eager to determine whether seat design could help minimize the likelihood of passengers sliding off seats and initiated a review of existing forward facing seats. The review examined seats of different designs within the corporate fleet plus a prototype seat. Without the advantage of seat compartmentalization, passive restraints or seat belts to reduce occupant movement during harsh maneuvers or in a collision, seat design in the first forward facing position should consider characteristics that provide passive restraint for the occupant. Tests using a weighted body form and three common clothing fabrics set against each seat cushion found a surprisingly wide range of friction values. The results show that both friction and seat base angle can be optimized to reduce the potential for rider injuries during turning and braking decelerations up to 0.5 g.
CitationMacnabb, M., Little, A., and Lamb, A., "Seat Design: An Important Consideration for Occupant Safety in Public Transit Buses," SAE Technical Paper 2008-01-2698, 2008, https://doi.org/10.4271/2008-01-2698.
- Macnabb, Baerg Little, Rutenberg Zaworski “Transit Bus Dynamic Performance and Crash Test Accelerations for Use in Standards Development” Canadian Multidisciplinary Road Safety Conference XV Fredericton, NB June 5-8 2005
- Mortimer, Segal Dugoff, Campbell Jorgeson, Murphy “Brake Force Requirement Study: Driver-Vehicle Braking Performance as a Function of Brake System Design Variables” University of Michigan, Highway Safety Research Institute April 1979
- Klusmeyer, Gray Bishop, Van Schoiack Woods, Mahoud “An In-service Evaluation of the Reliability, Maintainability and Durability of Antilock Braking Systems (ABS) for Heavy Truck Tractors” National Traffic Highway Safety Administration, US Department of Transportation March 1992
- ‘Standard Test Method for Static and Kinetic Coefficient of Friction of Plastic Film and Sheeting’
- SAE J2692 “Seating Evaluation - Truck and Bus”
- SAE J782 1980 “Motor Vehicle Seating Manual”