
Vehicle braking systems include: 1. Service braking system: Operated by the driver using the foot, also known as the foot brake system, its function is to decelerate a moving vehicle or bring it to a stop within the shortest possible distance; 2. Parking braking system: Operated by the driver using the hand, also known as the hand brake system, its function is to keep a vehicle stationary on various road surfaces after it has been parked; 3. Emergency braking system: Uses an independent circuit to control the wheel brakes as a backup system, its function is to ensure the vehicle can still decelerate or stop in case the service braking system fails; 4. Auxiliary braking system: Used in vehicles driving in mountainous areas or for certain special purposes, to enhance driving safety and reduce the performance degradation of the service braking system and brake wear, it helps stabilize the vehicle speed when going downhill.

There are several common braking methods for vehicles nowadays. The foot-operated service brake is the most commonly used, with ordinary family cars mostly employing disc brakes. There's a round disc in the center of the wheel, and brake pads clamp onto it to create friction for deceleration. Trucks often use drum brakes, which have a simpler and more durable structure. The parking brake is used when stationary to prevent rolling, with older vehicles using mechanical cables and newer models mostly using electronic buttons. New energy vehicles have a special feature called regenerative braking, which automatically decelerates when releasing the accelerator, converting kinetic energy back into electrical energy. When driving on mountain roads, experienced drivers often remind to use engine braking by shifting to lower gears to utilize engine resistance for speed control. Each of these braking methods has its purpose, and it's important to regularly check brake pad thickness, especially since disc brakes wear out relatively faster.

Brake types depend on usage scenarios. Family cars mainly use hydraulically-driven disc brakes for quick response and good heat dissipation; commercial vehicles favor drum brakes, which have slightly longer stopping distances but lower costs. Parking brakes come in mechanical handbrake and electronic handbrake variants, with the latter offering more convenient button operation. Auxiliary braking is particularly important for heavy vehicles – hydraulic retarders suit buses by reducing brake overheating risks on long descents, while exhaust brakes are more common in diesel vehicles. The regenerative braking unique to new energy vehicles achieves up to 30% energy recovery efficiency, working in tandem with friction brakes. Daily driving requires attention to abnormal brake noises and regular inspection of brake disc wear indicators.

Vehicle braking systems are mainly divided into three categories. For daily driving, friction brakes are used, with disc brakes being the current mainstream due to their superior heat dissipation and quick response, featuring a brake disc and caliper structure. Traditional drum brakes are more affordable but have poor heat dissipation. The parking brake operates independently of the main system, with trucks even utilizing spring brakes as a safety redundancy. In the new energy sector, regenerative braking is popular, with the single-pedal mode allowing energy recovery during deceleration. For long-distance travel, mastering engine braking techniques is recommended, such as downshifting to utilize engine resistance. Choosing the right braking type depends on the intended use: standard disc brakes suffice for urban commuting, off-road vehicles are better suited with drilled and slotted discs for heat dissipation, and track driving requires six-piston calipers.

The braking system is the core of driving safety. Disc brakes are currently the most common, using brake pads to clamp onto rotating metal discs for braking, with ventilated discs used in high-performance vehicles to prevent heat fade. Drum brakes have lower manufacturing costs but poor heat dissipation, mostly used on the rear wheels of trucks. Parking brakes are divided into lever-type handbrakes and electronic handbrakes. Regenerative braking in hybrid and electric vehicles enables energy recovery, generating braking force through motor reversal. Special auxiliary brakes like exhaust brakes slow down by blocking the exhaust pipe to create back pressure, suitable for long steep slopes. Note the impact of different weather conditions on braking effectiveness, with braking distance increasing by about 20% in rainy conditions.

Common braking methods each have their own characteristics. In friction braking, disc brakes and drum brakes are the most common, with disc brakes offering more linear braking and drum brakes being more wear-resistant. Electronic parking brakes add an automatic hold function compared to traditional mechanical ones. Unique to new energy vehicles is regenerative braking, which starts decelerating when the accelerator is released, reducing physical brake wear. Commercial vehicles are often equipped with retarders, such as electromagnetic retarders that provide continuous deceleration without wearing brake pads. In actual driving, braking before curves is essential, as braking sharply while turning can easily lead to loss of control. Enthusiasts who modify their cars often upgrade their braking systems, but it's important to ensure compatibility with the master cylinder pressure to avoid unbalanced brake force distribution.


