English edit

Etymology edit

dummy +‎ light

Noun edit

dummy light (plural dummy lights)

  1. (slang) Synonym of idiot light (warning light)
  2. (slang) A type of stop light (traffic light) set in the middle of the intersection, and not at the sides, corners or above (thus forming a crash hazard). These lights are placed similarly to how traffic police platforms are set dead center of intersections.

Further reading edit

(stop light):