Disc brakes are a type of braking system commonly used on bicycles, particularly in high-performance and public safety applications. The correct answer identifies the two main categories of disc brakes: mechanical and hydraulic.
Mechanical disc brakes operate through a cable system. The cable pulls a lever that engages the brake pads, creating friction against the rotor mounted on the wheel. This type of braking mechanism is often appreciated for its simplicity and ease of maintenance.
Hydraulic disc brakes, on the other hand, utilize hydraulic fluid to actuate the brake pads. When the brake lever is pulled, it compresses the fluid, which then pushes the brake pads against the rotor. This system allows for more consistent and stronger braking performance, especially under heavier loads or in more strenuous conditions, making it popular among various cycling disciplines and in public safety contexts.
Both mechanical and hydraulic disc brakes offer advantages like better stopping power and performance in wet conditions compared to other types of brakes, such as rim brakes. This distinction is important when considering the most effective braking systems for public safety cycling.