DEVELOPMENT AND DEMONSTRATION OF SCHOOL BUS VERTICAL ROOF LOADING TEST PROCEDURE

A vertical roof loading test per FMVSS 220 was conducted on a 66-passenger school bus. The purpose of the test was to demonstrate the practicality of the test procedure. The load was applied by means of two hydraulic cylinders acting on a rigid loading plate measuring 36 inches wide by 321 inches long located on the bus roof. Loading plate displacement was measured at two locations and bus roof displacement at three locations. Results indicate that the procedure specified by FMVSS 220 is practical and appears to be workable for all school buses currently being marketed.

• Corporate Authors:

  Ultrasystems, Incorporated

  Dynamic Science Division, 1850 West Pinnacle Peak Road
  Phoenix, AZ  United States  85027

  National Highway Traffic Safety Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Enserink, E
• Publication Date: 1976-9

Media Info

• Pagination: 40 p.

Subject/Index Terms

• TRT Terms: Buses; Dislocation (Geology); Load tests; Loads; Protection; Roofs; Safety; School buses; Test procedures; Tests
• Subject Areas: Highways; Public Transportation; Safety and Human Factors; Security and Emergencies;

Filing Info

• Accession Number: 00145589
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: DOT-HS-802-012 Final Rpt., Dyn. Sc-3968-76-33
• Contract Numbers: DOT-HS-6-01316
• Files: TRIS, USDOT
• Created Date: Jan 16 1977 12:00AM