Which braking action can cause the brakes to lock?

Which braking action can cause the brakes to lock?

• A. Mashing the brake without modulation.
• B. Using only the rear brake.
• C. Grabbing the front brake or jamming down on the rear brake.
• D. Applying brakes gradually.

Answer: (C)

When you brake, there’s a limit to how much friction the tires can use to slow you down. If you apply braking force abruptly or with too much pressure, you push past that limit and a wheel can stop rotating, causing a skid and you lose steering control. The front wheel is the primary stopper on a motorcycle because weight shifts forward during braking and it carries most of the stopping load. If you grab the front brake hard, you can quickly exceed the front tire’s grip, making the front wheel lock. Similarly, jamming hard on the rear brake can lock the rear wheel, especially on slick surfaces or when weight is forward, which also risks losing control. So, the safest, most controllable approach is smooth, progressive braking to stay within the tires’ grip. Gradual braking helps prevent lock, while abrupt inputs—especially grabbing the front or stomping on the rear—are the actions most likely to cause wheel lock.

When you brake, there’s a limit to how much friction the tires can use to slow you down. If you apply braking force abruptly or with too much pressure, you push past that limit and a wheel can stop rotating, causing a skid and you lose steering control.

The front wheel is the primary stopper on a motorcycle because weight shifts forward during braking and it carries most of the stopping load. If you grab the front brake hard, you can quickly exceed the front tire’s grip, making the front wheel lock. Similarly, jamming hard on the rear brake can lock the rear wheel, especially on slick surfaces or when weight is forward, which also risks losing control.

So, the safest, most controllable approach is smooth, progressive braking to stay within the tires’ grip. Gradual braking helps prevent lock, while abrupt inputs—especially grabbing the front or stomping on the rear—are the actions most likely to cause wheel lock.