What type of braking system do many combination vehicles use?

Many combination vehicles utilize air brake systems primarily due to their ability to provide effective stopping power for large and heavy loads. Air brakes work by using compressed air to apply pressure to the brake components, allowing for improved performance, especially under heavy braking conditions.

One key advantage of air brake systems is their reliability and safety in various conditions, including their ability to release and activate brakes quickly, which is particularly important when maneuvering large trailers. Additionally, air brakes have built-in safety features, such as the ability to engage automatically when air pressure drops to a certain level, preventing brake failure.

While hydraulic brake systems, disc brake systems, and drum brake systems can be effective in certain vehicle types, they are not the standard for most combination vehicles. Hydraulic systems are more commonly found in smaller vehicles, and disc and drum brakes may be part of different configurations but do not provide the same benefits in terms of air pressure and freight handling as air brake systems do.