They have devices called "brakes" which turn kinetic energy (the energy of motion) into other forms of energy - usually thermal energy (heat).
vehicles
All vehicles require an emergency break.
On the newer vehicles, you push the parking brake down to release the parking brake. Older vehicles have a release handle on the lower left side of the dashboard.
An ABS brake is another term for an antilock brake, a brake fitted to some vehicles to prevent skidding and compensate for overbraking.
The brake light switch is not air actuated.
emergency brake...
yes
Most front wheel drive vehicles do. -The caliper in all vehicles is fixed and the 'floating disc' is the brake rotor.
Some vehicles do, some don't.
The brake light on most vehicles is not only an indicator that the parking brake is on, but that there is a problem with the system.
In most cases a brake light switch is of the normally open type when the brake pedal is operated this makes the switch a closed circuit which lets the current flow from the fuse to the vehicles brake lights On some older British vehicles the switch was in the brake line it was operated by the hydraulic pressure in the brake circuit when the pedal was operated
The brake light switch on almost all vehicles is located behind the brake pedal lever.