The Stop Light Switches can be classified, depending on the function of the circuit in which they are inserted, in the following types:
1) Switches with power circuit
Control the powering on of the rear lights warning of braking.
They are mounted only on the brake pedal and generally are of electromechanical type normally closed (N / C).
2) Switches with signal circuit (electronic)
Are mounted on the brake pedal or clutch depending on the function implemented on the control unit to which the switch is connected:
- Check Control - control system of components operation
- Cruise Control - Electronic system for automatic adjustment of the speed of a car. The adjustment is interrupted in case of the pressure of the brake pedal or clutch pedal.
- Cut-Off - System for the decommissioning of fuel injectors when the brakes engine medium/high rpm engine.
- BAS (Brake Assist System) - A system to increase the braking force in the event of emergency braking (pedal down quickly).
- ETS (Electronic Traction Control) - A system for driving assistance in winter condition that reduces engine power and applies the brakes if the wheels slip.
- ABS (Antilock Braking System) - Safety system that prevents the wheels from locking during braking of the vehicle. Maintains the drivability during emergency braking and reduced braking distances.
- ESP (Electronic Stability Program) - A system for controlling the stability of the car, acting in dangerous situations, adjusting engine output and braking of individual wheels possibly with different intensities.
3) Combined switches
This type integrates in a single body more electromechanical, power and signal switches.