[Code of Federal Regulations]

[Title 49, Volume 5]

[Revised as of October 1, 2005]

From the U.S. Government Printing Office via GPO Access

[CITE: 49CFR393.49]



[Page 401]

 

                        TITLE 49--TRANSPORTATION

 

                      DEPARTMENT OF TRANSPORTATION

 

PART 393_PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION--Table of 

Contents

 

                            Subpart C_Brakes

 

Sec. 393.49  Single valve to operate all brakes.



    Every motor vehicle, the date of manufacture of which is subsequent 

to June 30, 1953, which is equipped with power brakes, shall have the 

braking system so arranged that one application valve shall when applied 

operate all the service brakes on the motor vehicle or combination of 

motor vehicles. This requirement shall not be construed to prohibit 

motor vehicles from being equipped with an additional valve to be used 

to operate the brakes on a trailer or trailers or as provided in Sec. 

393.44. This section shall not be applicable to driveaway-towaway 

operations unless the brakes on such operations are designed to be 

operated by a single valve.