traffic beam

noun

traffic beam

noun

1

Automotive, Transport, Vehicles Dated A headlight setting intended for roads with traffic on them at night.

For your own safety and that of others, follow the suggestion in the verse: “Use country beam When roads are clear, Use traffic beam When cars are near.”1940, Ralph A. Richardson, Optics and Wheels, General Motors Corporation, p. 25

Synonyms: low beam
Antonyms: country beam, high beam

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.