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T.3.1.1 The vehicle must be equipped with a braking system that must:
a. Act on all four wheels
b. Be operated by a single control
c. Be capable of locking all four wheels
T.3.1.2 The braking system must have two independent hydraulic circuits such that in the case of a leak or failure at any point in the system, effective braking power is maintained on minimum two wheels.
T.3.1.3 Each hydraulic circuit must have its own fluid reserve using separate reservoirs or an OEM style reservoir
T.3.1.4 A single brake acting on a limited slip differential may be used.
T.3.1.5 “Brake by Wire” systems are prohibited.
T.3.1.6 Unarmored plastic brake lines are prohibited.
T.3.1.7 The braking systems must be protected with scatter shields from failure of the drive train (see
T.5.2) or from minor collisions.
T.3.1.8 In side view any portion of the brake system that is mounted on the sprung part of the vehicle must not project below the lower surface of the chassis
T.3.1.9 Fasteners in the Brake system are Critical Fasteners, see T.8.2
T.3.1.10 The brake pedal must be:
a. Fabricated from steel or aluminum OR machined from steel, aluminum or titanium.
b. Designed to withstand a force of 2000 N without any failure of the brake system or pedal box.
This may be tested by pressing the pedal with the maximum force that can be exerted by any official when seated normally.
T.3.1.11 (EV only) Additional requirements for Electric Vehicles:
a. The first 90% of the brake pedal travel may be used to regenerate brake energy without actuating the hydraulic brake system.
b. The remaining brake pedal travel must directly actuate the hydraulic brake system. Brake energy regeneration may remain active.
c. Any strategy to regenerate energy while coasting or braking must be covered by the FMEA