Retardation force is calculated below:
(a) For a truck made to pull some other car armed with heavens brakes, pressure differential amongst the manage line type in coupling and you can an excellent 50-cubic-inches decide to try reservoir attached to the control line productivity coupling should perhaps not meet or exceed the costs given from inside the step three.5(a) (1), (2), and (3) under the requirements given inside 3.5(b) (1) owing to (4):
(1) step one psi whatsoever type in demands comparable to or more than 5 psi, however higher than 20 psi;
(2) dos psi at all enter in demands equivalent to or higher than 20 psi however greater than forty psi; and you may
(2) Whenever heavens is actually placed on or create regarding handle range input coupling by using the trailer try rig found within the Profile 1;