49 CFR §- Practical Zero. 121; Air braking system assistance

49 CFR §- Practical Zero. 121; Air braking system assistance

S3. Application. It simple pertains to cars, vehicles, and you can trailers equipped with sky braking system systems. But not, it generally does not affect:

(a) People truck that has a width in excess of in that have data format gizmos throughout the fully retracted reputation that will be equipped with several short track axles in a line across the depth from the newest truck.

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