Abstract
A dynamic test for seat belt assemblies is soon to be mandatory for new cars sold in australia. As an aid to the development of suitable test requirements a meeting was held at the department of motor transport, new south wales, to bring together organisations and individuals concerned with such requirements. This report covers work done by the staff of the traffic accident research unit for this meeting, and is presented in 4 chapters as follows: (1) an introduction to dynamic tests on seat belts; (2), seat belt dynamics; (3), specification of test dummy for dynamic testing of automotive seat belts; and (4), the design and operation of seat belt buckles.