which type of break is most common in commercial vehicles
Disc brake Hydraulically actuated disc brakes are the most commonly used form of brake for motor vehicles, but the principles of a disc brake are applicable to almost any rotating shaft.
Crash/ride cymbal A ride/crash cymbal is similar in design and function to a crash/ride, but slightly heavier and/or less tapered to optimise the ride rather than the crash function. It is far less common than the crash/ride.