Which brake is primarily used for maximum stopping power?

The front brake is primarily used for maximum stopping power due to the dynamics of how a bicycle slows down. When a rider applies the brakes, weight shifts forward onto the front wheel, increasing its traction. This allows the front brake to engage more effectively and provides most of the stopping force.

In terms of braking mechanics, the front brake typically offers greater deceleration because it can handle more force without losing control. This is important in emergency situations where quick stopping is crucial.

Using both brakes together can enhance overall stopping power and help maintain balance and control, but when maximum stopping power is needed, the front brake plays a more critical role. The other options, such as relying solely on the rear brake or an emergency brake, do not provide the same level of stopping power due to the reduced weight on the rear wheel during braking.