Why is monitoring wheel speed sensors during a race important?

• A. Detect wheel lock or slip, monitor traction, calibrate stability control or ABS
• B. Measure air temperature
• C. Count laps
• D. Estimate pit stop duration

Answer: (A)

Wheel speed sensors provide real-time data on how fast each wheel is turning. This information is essential because it lets the car’s systems detect when a wheel is slipping or locking up, and it enables real-time adjustments to braking and traction control. When a wheel starts to skid or loses grip, traction control can modulate power or apply braking to specific wheels to regain stability. ABS and electronic stability control use the wheel speed data to prevent a total loss of braking control, helping the car slow smoothly and maintain steering through corners. In a race, keeping grip and stability under braking and acceleration directly influences lap times and overall performance.

Other options involve different sensing needs: air temperature is measured by separate temperature sensors, lap counts come from timing and scoring systems, and pit stop duration is tracked by pit timers. The wheel speed data is specifically about grip, braking, and stability, which is why it’s the best choice.