IMPACT DESIGN OF CRASH CUSHIONS FOR NON-STATIONARY BARRIERS

This paper presents two methods which may be used to design non-stationary traffic barriers such as sign trucks with crash cushion attachments. The two methods are based on barrier resistance charts and graphs which plot acceleration versus time. Simple equations for both methods have been derived and are presented along with example problems. The results are compared with more complex computer simulations to illustrate the usefulness of the equations. In particular, an equation for a moveable barrier resistance chart is presented derived from the general differential equation. Usage of the chart is discussed and shown in examples. The acceleration versus time method is presented as sets of simple equations, based on two (or more) steps of constant crushing force. The method can be applied in this form for design purposes. Feasibility of the methods with regard to angular impacts is briefly discussed by means of a few computer simulation results. /Author/

• Supplemental Notes:
  • This paper was presented at the 55th Annual Meeting of the Transportation Research Board, Washington, D.C.
• Corporate Authors:

  Ontario Ministry of Transportation & Communic, Can

  1201 Wilson Avenue
  Downsview, Ontario M3M 1J8,   Canada 
• Authors:
  • Jung, F W
  • Billing, A M
• Publication Date: 1976-1

Media Info

• Features: Appendices; Figures; References;
• Pagination: 16 p.

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Barriers (Roads); Crash cushions; Crushing; Design; Impacts; Simulation
• Uncontrolled Terms: Barriers
• Subject Areas: Design; Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00149834
• Record Type: Publication
• Report/Paper Numbers: Rept. No. RR205
• Files: TRIS
• Created Date: Apr 27 1977 12:00AM