This SAE Recommended Practice provides a field test procedure and instructions for: Instrumentation and Equipment Vehicle Preparation Test of air-braked single and combination vehicles Calculation of brake force distribution This test procedure is intended to be used as a field procedure. If a more refined method, utilizing laboratory equipment, is required, refer to SAE J1505. Purpose This procedure provides a method to determine the brake force distribution (brake system effectiveness) for trucks and buses with a GVWR greater than 4536 kg (10 000 lb).
Document has not been revised or updated in many years. Extensive changes/additions/deletions are required to update RPto reflect current industry practices and procedures.