Motorcycle · General

A motorcycle's headlight is on even during the day. Why?

  1. A It is required by law only
  2. B Daylight running lights (DRL) — permanently on headlights — significantly increase motorcycle conspicuity (visibility to other drivers) and are shown in research to reduce daytime collisions
  3. C To see better at night
  4. D To reduce fuel consumption

Why this is the answer

CONSPICUITY is the most important passive safety strategy for motorcyclists — the ability to be seen by other road users. Research consistently shows motorcyclists are frequently struck because drivers looked but 'didn't see' the motorcycle — a phenomenon caused by smaller frontal profile and the brain's tendency to filter out objects it doesn't expect. DAYTIME RUNNING LIGHTS significantly improve conspicuity — a lit headlight approaching is more likely to register in a driver's peripheral vision and trigger attention. This is why motorcycles manufactured after 1978 have headlights that come on automatically when the engine runs. In addition to headlights, conspicuity is improved by: bright/reflective gear; lane positioning in the center-left of the lane (most visible to oncoming traffic); avoiding vehicles' blind spots.
Source: MSF BRC, Conspicuity and Visibility

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