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Which sensor tells the system the vehicle is on a slope?

  • A.A camera
  • B.An inclinometer or longitudinal acceleration sensor within the stability control unit, which senses the pitch angle
  • C.A longitudinal accelerometer
  • D.The wheel speed sensors, which detect the movement of the vehicle and therefore indicate that it is on a gradient

Answer: C

A longitudinal accelerometer reads the component of gravity along the vehicle. The last option describes exactly that sensor and its location, which makes it a correct and more specific version of the same answer. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision. A symptom that appears under one condition and not another is what narrows the diagnosis quickly. The shared behaviour explains why these belong together and the differences explain why both exist.

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