Combined braking system

A combined braking system (CBS), also called linked braking system (LBS), is a system for linking front and rear brakes on a motorcycle or scooter. In this system, the rider's action of depressing one of the brake levers applies both front and rear brakes. The amount of each brake applied may be determined by a proportional control valve. This is distinct from (conventional) integrated brakes, where applying pressure to the rear brake pedal only applies some braking force to the front brake.

In the United States, the law requires a motorcycle to have two separate braking systems, although there is no special requirement that the systems have separate controls. By contrast, a car is required to have only one braking system for dynamic braking (i.e. braking when moving), plus a separate parking brake.

Since 2016, the EU requires CBS or anti-lock braking system (ABS) on all new scooters, motorcycles, tricycles, and quads below 125 cc.

Since 1 April 2019, India requires CBS (or ABS) on all new two-wheelers below 125 cc.

From 1 January 2024, Argentina will require CBS (or front wheel ABS) on all new on-road motorcycles between 50 and 250cc (or electric equivalents).

Chile will require CBS (or ABS) on all new motorcycles from 50 cc to 149 cc or 4 kW to 11 kW from February 2026.

From October 2025, Colombia will require CBS (or ABS) from 50 cc to 149 cc or 4 kW to 11 kW.

From March 2027, Colombia will require CBS (or ABS) on all new motorcycles below 125 cc.