Section 26458 Of Article 2. Operation Of Brakes From California Vehicle Code >> Division 12. >> Chapter 3. >> Article 2.
26458
. (a) The braking system on every motor vehicle used to tow
another vehicle shall be so arranged that one control on the towing
vehicle shall, when applied, operate all the service brakes on the
power unit and combination of vehicles when either or both of the
following conditions exist:
(1) The towing vehicle is required to be equipped with power
brakes.
(2) The towed vehicle is required to be equipped with brakes and
is equipped with power brakes.
(b) Subdivision (a) shall not be construed to prohibit motor
vehicles from being equipped with an additional control to be used to
operate the brakes on the trailer or trailers.
(c) Subdivision (a) does not apply to any of the following
combinations of vehicles, if the combination of vehicles meets the
stopping distance requirements of Section 26454:
(1) Vehicles engaged in driveaway-towaway operations.
(2) Disabled vehicles, while being towed.
(3) Towed motor vehicles.
(4) Trailers equipped with inertially controlled brakes which are
designed to be applied automatically upon breakaway from the towing
vehicle and which are capable of stopping and holding the trailer
stationary for not less than 15 minutes.