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Which additional sensors does stability control require?

  • A.Yaw rate, lateral acceleration and steering angle sensors
  • B.A pressure sensor at each caliper, which measures the braking force applied and therefore allows it to be corrected
  • C.A load sensor
  • D.A camera reading the road ahead, which determines the path the vehicle should follow and compares it with the actual one

Answer: A

The system must know what the driver intends and what the vehicle is doing, which needs steering angle for the first and yaw rate with lateral acceleration for the second. Cameras belong to driver assistance rather than to stability control. The order in which the effects act is what decides the outcome, so it is worth establishing first. Reading the definition literally, rather than recalling a summary, avoids the usual confusion. Most errors here come from carrying a result across from a neighbouring case where it does not hold.

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