The term e-brake refers to an emergency brake mechanism that is typically used in vehicles as a backup braking system. Other synonyms for e-brake include parking brake, hand brake, and emergency handbrake. The parking brake is a mechanism used in modern vehicles to keep them stationary while parked. The hand brake is another term used interchangeably to refer to the e-brake, while the emergency hand brake specifically means a braking system that activates automatically in case of an emergency. Regardless of the terminology used, this brake is an essential safety feature that should be used when parking a vehicle on a slope or when the primary braking system fails.