Interpretation ID: aiam0846
Senior Engineer
Head of Mechanical Section
British Standards Institution
Hemel Hempstead Centre
Maylands Avenue
Hemel Hempstead
Herts
England;
Dear Mr. Dandy: This is in further reply to your letter of July 26, 1972, concernin the seat belt retractor test procedures of section S5.2(k) of Motor Vehicle Safety Standard No. 209.; In our initial reply of August 21, we stated that the belt was to b retracted completely during the cycling, even though some vehicle installations might prevent complete retraction. After further examining the consequences of this position, we have concluded that it is in error.; The intent of the cycling sequence is to reflect the normal use of th belt over time. If the belt is designed to be installed in a vehicle in such a manner that during normal cycling a part of the webbing cannot be wound onto the retractor, a compliance test should employ the same restrictions of movement. We therefore conclude that you are correct in considering a belt to be fully retracted for purposes of Standard No. 209 when it is retracted as fully as the geometry of its installation permits.; Sincerely, Richard B. Dyson, Assistant Chief Counsel