Interpretation ID: aiam1213

Mr. Francois Louis,Manager,Technical Standards Department,Renault, Inc.,100 Sylvan Avenue,Englewood Cliffs, New Jersey 07632; Mr. Francois Louis
Manager
Technical Standards Department
Renault
Inc.
100 Sylvan Avenue
Englewood Cliffs
New Jersey 07632;

Dear Mr. Louis:#This is in reply to your letter of August 1, 1973 asking for clarification of S5.2.1 and S6.9 of Standard No. 105a.#You interpret the parking brake test as allowing 'the vehicle to slide down the 30% incline (because of its weight) as long the wheels remain locked'. The parking brake must hold the vehicle on a 30% grade for 5 minutes. If vehicle weight distribution is such that the limit of traction is exceeded and the vehicle slides down the incline, no noncompliance would be indicated unless the parking brake failed to lock the wheels.#No skid number is specified for the 'clean, dry, smooth, portland cement concrete' incline surface specified in S6.9.#Yours truly,Richard B. Dyson,Assistant Chief Counsel;