The brand new group of decelerations are going to be conducted below:

4.2 Brake stamina. Whenever connected to an enthusiastic inertia dynamometer, per braking system would be capable of making ten consecutive decelerations at an average price off 9 f.p.s.p.s. off 50 m.p.h. so you can 15 meters.p.h., at the equal durations from 72 moments, and you may might be effective at decelerating to help you a halt from 20 meters.p.h. in the an average deceleration speed out of fourteen f.p.s.p.s. one-minute following the 10th deceleration.


4.2.step one That have a primary brake temperatures anywhere between 150 °F. and 2 hundred °F. into the very first braking system app, while the drum or disc spinning in the a speeds equal to 50 yards.p.h., pertain the fresh new brake and you may reduce at the typical deceleration rates out-of 9 f.p.s.p.s. to help you 15 yards.p.h. On getting 15 meters.p.h., speed in order to fifty yards.p.h. and implement new brake to possess a second date 72 moments immediately following the start of the initial app. Recite the latest years up until ten decelerations were made. This service membership line air tension will not surpass one hundred psi during the any deceleration.

This service membership range sky stress needed seriously to to obtain a speed off twelve f

cuatro.dos.2 The next adopting the end of your history deceleration expected by the cuatro.2.step 1 and with the musical instrument otherwise disc rotating within a rate of 20 yards.p.h., decelerate so you’re able to a halt at the average deceleration speed out of 14 f.p.s.p.s.

cuatro.step three Brake healing. But given that considering for the 4.3(a) and you may (b), carrying out two moments after doing the new assessment necessary for 4.2, an excellent vehicle’s brake is going to be able to make 20 straight ends off 30 mph from the the average deceleration speed out of a dozen f.p.s.p.s., within equal menstruation of 1 minute mentioned right away out-of for every braking system app. p.s.p.s. are not more than 85 lb/in two , rather than lower than 20lb/in 2 to possess a brake perhaps not subject to the power over a keen antilock program, or 12 pound/in two to have a brake at the mercy of the new control of an enthusiastic antilock system.

(b) Despite 4.3, neither side axle brake out-of a shuttle otherwise a truck almost every other than simply a trailer-tractor try susceptible to the requirement established for the 4.step 3 prohibiting the service range heavens stress of are below 20 lb/in 2 to have a braking system maybe not at the mercy of the control of an enthusiastic antilock program or a dozen lb/in two to possess a braking system at the mercy of the fresh control of a keen antilock program.

5.1 Antilock program malfunction. Into a truck tractor are made into the or once March 1, 1997, that’s armed with a keen antilock brakes and just one device automobile gleeden SlevovГЅ kГіd are created on the or just after February step one, 1998, that’s equipped with an enthusiastic antilock brake system, a fail you to definitely has an effect on this new age bracket or indication of reaction otherwise control indicators of any a portion of the antilock program shall maybe not enhance the actuation and you will release times of this service membership brakes.

5.dos Antilock system electricity – trailers. On a truck (as well as a trailer converter dolly) are available into the otherwise immediately after March 1, 1998, that’s equipped with a keen antilock system that requires electrical energy having procedure, the benefit can be taken from the brand new pulling car as a consequence of that or even more electrical circuits which give continuous energy once the powered automobile’s ignition (start) button is in the “on” (“run”) condition. New antilock program shall immediately located energy on the stoplamp circuit, should your no. 1 circuit otherwise circuits aren’t working. Each trailer (together with a trailer converter dolly) manufactured toward or immediately following February step 1, 1998, that’s equipped so you’re able to pull some other sky-braked vehicle would be armed with one or more circuits and that offer proceeded capacity to the newest antilock system into car(s) it tows. Such as for example circuits would be sufficient to permit the antilock program for the each towed vehicles becoming completely operable.