Ariz. Admin. Code § R13-3-1103 - Brake Requirements
A. A tow
truck shall have a power-assisted service brake system, separate from the
parking brake system, capable of stopping and holding the tow truck and its
load under all conditions and on any grade on which the tow truck is operated.
If a tow truck's service brake system is actuated by air, the tow truck shall
be equipped with:
1. A truck-tractor
protection valve; and
2. An audible
or visible low air warning device that actuates at a minimum of 55
psi.
B. A tow truck
shall have a parking brake system, separate from the service brake system,
which is capable of holding the tow truck and its load. If the tow truck's
parking brake system is actuated by air, the tow truck shall be equipped with:
1. A truck-tractor protection valve;
and
2. An audible or visible low
air warning device that actuates at a minimum of 55 psi.
Notes
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