DIFFERENCES BETWEEN STEEL AND CONCRETE CRASH BARRIERS IN ACCIDENTS AND SOME REMARKS CONCERNING A DUTCH CRASH CUSHION. PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM: ROAD DEVELOPMENT AND SAFETY, LUXEMBOURG, JUNE 1989

Hazardous strong fixed objects located within the driving environment have to be removed or shielded. The latter way of protection is possible with longitudinal barriers and crash cushions. Recently the Institute for Road Safety Research (SWOV) has carried out research on both groups of highway traffic barriers. Research into steel barriers has shown that in the case of a collision the difference between a rigid barrier (maximum deflection of about 50 cm) and a flexible one (deflection of 150 cm) is relatively small. The results are expressed in deceleration and exit angle. Concrete barriers such as the New Jersey barrier give good results with small impact angles. The deceleration and mounting height of the front wheel increase as impact angle and speed increase. By reducing the friction of the barrier, mounting height decreases. The differences between steel and concrete barriers are presented in terms of decelaration and exit angle. Vehicle velocity, vehicle mass and impact angles are the parameters used. The results are based on mathematical simulations with the computer model VEDYAC (VEhicle DYnamics And Crash dynamics). A comparison with the results of full scale tests is also given. SWOV has developed a crash cushion called RIMOB. The RIMOB is built up from interconnected box elements. Each box contains 3 or more aluminium crumpling tubes assembled in a longitudinal direction. In the event of a frontal collision, the RIMOB is compressed axially. In side impacts the vehicle is guided. Several hundred RIMOBS have been installed in the Netherlands since 1982. Many are involved in accidents. The results of the study evaluating these crash chusions are presented. For the covering abstract of the conference see IRRD 828172.

  • Corporate Authors:

    Institut Naitonal de Recherche Routiere (INRR)

    75, Rue de Mamer
    Luxembourg,   Luxembourg 

    Institut National de Recherche Routiere (INRR)

    75, Rue de Mamer
    Luxembourg,   Luxembourg 
  • Authors:
    • Schoon, C C
  • Publication Date: 1989

Language

  • Undetermined

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Filing Info

  • Accession Number: 00604569
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Feb 28 1991 12:00AM