At high speeds, the effectiveness of safety systems can be compromised in which of the following?

• A. Seatbelts
• B. All of the above
• C. Airbags
• D. Brakes only

Answer: (B)

At high speeds, the energy involved in a crash increases dramatically, testing how well each safety system can perform. Seatbelts are essential because they keep you restrained and help position you so other safety features can work. If a belt isn’t worn properly or you’re out of the optimal seating position, its ability to protect you and to allow airbags to function safely is diminished, especially under high-energy forces.

Airbags cushion you during a crash, but they rely on correct seating and restraint; at very high speeds or if you’re too close to or too far from the steering wheel or dash, deployment may be less effective or could cause injury, because the airbag’s cushioning effect depends on proper spacing and timing.

Brakes face the greatest challenge with higher speeds. The heat from heavy, sustained braking can lead to brake fade, reducing stopping power when you most need it. Even with modern systems, there are limits to how quickly you can stop from very high speeds.

So, at high speeds, each of these safety systems can be compromised, making the combined choice the best answer.