If you brake hard on a straightaway and your rear wheel locks, what should you do?

Answer: A — Keep the rear wheel locked until stopped

If you brake hard on a straightaway and your rear wheel locks, it is essential to keep the rear wheel locked until you come to a complete stop. This is because releasing the rear brake abruptly when the wheel locks can cause the bike to skid uncontrollably, leading to a loss of stability and potential loss of control. By maintaining the rear brake locked until you stop, you allow the tire to regain traction gradually and stabilize the motorcycle. This action increases your chances of maintaining control of the bike and reducing the risk of a potential accident. Options B, C, and D are incorrect: Releasing the rear brake immediately (Option B) is not recommended as it can lead to a loss of control. Applying more pressure to the rear brake (Option C) can further lock the wheel and increase the risk of skidding. Using only the front brake (Option D) in this situation can cause the motorcycle to pitch forward, potentially leading to a loss of control.