Which of the following is considered a requirement for proper brake system in passenger cars?

A proper brake system in passenger cars is crucial for ensuring safe operation on the road. The requirement that both a foot brake and a parking brake be present and functioning properly reflects the need for multiple layers of safety in braking mechanisms.

The foot brake, which is commonly used during regular driving, is essential for slowing down or stopping the vehicle in response to traffic and road conditions. It operates through hydraulic force and must be reliable under various circumstances, including emergency situations.

The parking brake, sometimes referred to as an emergency brake or handbrake, serves to keep the vehicle stationary when parked. It is especially important on inclines and ensures that the vehicle does not roll away unintentionally. This braking system operates independently of the foot brake system, providing an additional safety measure in case the primary braking system were to fail.

Requiring both types of brakes ensures that drivers have reliable stopping capabilities at all times—during normal driving and when a vehicle is parked. This dual brake requirement enhances overall vehicle safety and helps prevent accidents caused by brake failure or vehicle movement when it is not intended.