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Which vehicle characteristic increases non exhaust particulate emissions?

  • A.A smaller engine, which must work harder and therefore produces more wear from the tyres and the brakes
  • B.Nothing
  • C.Increased weight, which raises the forces at the tyre and the energy the brakes must dissipate at every stop
  • D.Greater vehicle mass

Answer: D

Heavier vehicles wear tyres and brakes faster. The last option explains exactly that mechanism, which makes it a correct and more instructive version. It is a recognised concern for electric vehicles. Checking which component actually carries the load settles most questions of this kind at once. Naming what changes and what stays the same is the reliable route through questions of this shape. A single measurement chosen to respond to the one asymmetry beats several that respond to shared behaviour.

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