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U.S. Federal Regulations

U.S. Federal regulations specify the adequacy and application of brake related systems and parts. It is common for more than one section to address they same or similar topic. Do not rely upon the data here to be current. Always check for the latest revisions, exceptions and for additional applicable regulations.


Air Brake Regulations

What Is "121" Breakaway & Emergency Brakes (393.43) Required Brake Systems (393.40)
Complete 121
(571.121) 		Brakes Required On All Wheels (393.42) Brake Tube & Hose, Adequacy (393.45)
Air Suspensions
(393.207 Section F)		 Parking Brakes
(393.41)		 Anti-Lock Brakes
(393.55)


Lighting Regulation Downloads

Lamps And Reflective Devices
(393.11)		 Retroreflective Sheeting & Reflex Reflectors
(393.13),		 Lamps & Reflectors On Driveaway/Towaway Operations (393.17)
Combining Lighting Devices & Reflectors.
(393.22) 		Requirements For Lamps Other Than Head Lamps
(393.25)		 Requirements For Reflex Reflectors.
(393.26)
Wiring Specifications
(393.27)