Effects of belt restraint systems on occupant protection performance in side impact crashes

Shimoda, Nobuyoshi; Nishida, Yousuke; Akiyama, Akihiko

Affiliations

Abstract

Currently, belt restraint systems are among the most effective occupant protection devices now available and mandatory usage laws are spreading among the world's nations. Accordingly, the belt usage ratio is also increasing annually. Following the implementation of the FMVSS 208 Passive Restraint Regulation in the United States, a diversity of belt restraint systems has come to be offered on the automotive market.

This implies that an increasing number of belt-restrained occupants may be involved in side impact traffic accidents in the future.

Considering such a situation, in this paper, we focused attention on occupant head behavior in a side impact crash, and investigated the effects of several belt restraint systems on occupant head behavior and impact protection performance in side impact crashes.

For this purpose, we conducted l0 full-scale side impact crash tests according to the National Highway Traffic Safety Administration (NHTSA) test procedure using one model of a Honda subcompact car.

In half of these test cars, two '88 improved-type Side Impact Dummies (SID) were placed one behind the other on the near-side.

In the other half, two SID's were placed side by side in the front seats.

Five different restraint conditions were tested in both seating configurations, i.e., lap belts only, 2 point automatic shoulder belts (2P/A), 3 point automatic belts (3P/A), 3 point manual belts (3P/M) and no-restraints.

Based on these test results, we compared and analyzed whether SID head behavior and SID torso region accelerations were affected by differences of condition such as occupant restraints, seating positions and presence of a side occupant, and discussed the effectiveness of the belt restraint systems tested on side impact occupant protection.

Cited Works (3)

Year	Entry
1985	Rouhana SW, Foster ME. Lateral impact: an analysis of the statistics in the NCSS. In: Proceedings of the 29th Stapp Car Crash Conference. October 9-11, 1985; Washington, DC. Warrendale, PA: Society of Automotive Engineers:79-98. SAE 851727.
1976	Hartemann F, Thomas C, Foret-Bruno JY, Henry C, Fayon A, Tarriere C. Occupant protection in lateral impacts. In: Proceedings of the 20th Stapp Car Crash Conference. October 18-20, 1976; Dearborn, MI. Warrendale, PA: Society of Automotive Engineers:191-219. SAE 760806.
1981	Walz FH, Niederer PF, Thomas C, Hartemann F. Frequency and significance of seat belt induced neck injuries in lateral collisions. In: Proceedings of the 25th Stapp Car Crash Conference. September 28-30, 1981; San Francisco, CA. Warrendale, PA: Society of Automotive Engineers:131-146. SAE 811031.

Cited By (3)

Year	Entry
1994	Fildes BN, Lane JC, Lenard J, Vulcan AP. Passenger Cars and Occupant Injury: Side Impact Crashes. Canberra, Australia: Federal Office of Road Safety; April 1994. Report No. CR 134.
1991	Kamrén B, Kullgren A, Lie A, Sköld B-Å, Tingvall C. Side protection and child restraints: accident data and laboratory test including new test methods. In: Proceedings of the 13th International Technical Conference on Experimental Safety Vehicles (ESV). November 4-7, 1991; Paris, France.341-345.
1991	Öhlund A, Saslecov V. A dynamic test method for a car’s interior side impact performance. In: Proceedings of the 13th International Technical Conference on Experimental Safety Vehicles (ESV). November 4-7, 1991; Paris, France.598-608.