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SAE J1452_201811

Заменен
Trailer Grade Parking Performance Test Procedure
This SAE Recommended Practice establishes methods to determine grade parking performance with respect to:
  1. a Ability of the parking brake system to lock the braked wheels.
  2. b The trailer holding or sliding on the grade, fully loaded, or unloaded.
  3. c Applied manual effort.
  4. d Unburnished or burnished brake lining friction conditions.
  5. e Down and upgrade directions.