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Which lamp technology now dominates new vehicle lighting?

  • A.Laser lamps, which use a blue laser exciting a phosphor and are fitted to the majority of new vehicles sold today
  • B.Light emitting diodes
  • C.High intensity discharge lamps, which offer the greatest efficiency and are therefore fitted to most new vehicles
  • D.Halogen lamps

Answer: B

Diodes give long life, instant response, low consumption and freedom of styling. Laser lamps genuinely exist as a supplementary main beam on a few expensive vehicles, which makes the last option a real if rare technology. Checking which component actually carries the load settles most questions of this kind at once. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision. The order in which the effects act is what decides the outcome, so it is worth establishing first.

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