Trailer Grade Parking Performance Test Procedure J1452_199509

This SAE Recommended Practice establishes methods to determine grade parking performance with respect to: a. Ability of the parking brake system to lock the braked wheels; b. The trailer holding or sliding on the grade, fully loaded or unloaded; c. Applied manual effort; d. Unburnished or burnished brake lining friction conditions; and e. Down and up grade directions. This document establishes a uniform procedure for determining the parking performance on a grade of any new trailer with manufacturer's maximum weight rating of more than 4500 kg (10 000 lb) intended for roadway use.