BART SCALE MODEL SAND BUMPER ARRESTOR TESTS

Scale model tests were performed to evaluate the effectiveness of an end-of-track sand bumper arrestor. The tests were conducted using a 1/15 replica of the BART A car at scale speeds to 80 mph. A second dummy car was used to model a two-car train and scale speeds to 60 mph were tested. The results indicate that a 24-ft sand bumper would be effective to approximately 20 mph with a two-car train and speeds below that with longer trains. Increasing the bumper length will improve the stopping power, but beyond 50 ft the first car has risen above the 3-1/2 ft high sand bumper and is unstable. A scale model sled-sand braking system was tested with a single BART car and was found to be effective up to 80 mph.

• Supplemental Notes:
  • Contributed by the Intersociety Committee on Transportation for presentation at the Intersociety Conference on Transportation, Denver, Colo., Sept. 23-27, 1973.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Krachman, H E
  • McCutchen, W R
• Publication Date: 1973-9

Media Info

• Features: Figures;
• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Rapid transit; Safety
• Identifier Terms: San Francisco Bay Area Rapid Transit District
• Old TRIS Terms: Sand bumper arresters
• Subject Areas: Public Transportation; Railroads; Safety and Human Factors;

Filing Info

• Accession Number: 00051404
• Record Type: Publication
• Source Agency: ASME Journal of Mechanical Engineering
• Report/Paper Numbers: 73-ICT-75 Paper
• Files: TRIS
• Created Date: Apr 9 1982 12:00AM