running light

American  

noun

1. any of various lights required to be displayed by a vessel or aircraft operating between sunset and sunrise.

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running light British  

noun

1. nautical one of several white, red, or green lights displayed by vessels operating at night

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Etymology

Origin of running light

First recorded in 1880–85

Example Sentences

Transit advocates have repeatedly raised concerns about the dangers of running light rail service at street level in Rainier Valley.

From Seattle Times

The law says to turn on your headlights, not leave it to running lights that also don’t illuminate dashboards.

From Seattle Times

General Motors said on Wednesday it was recalling 825,000 trucks and SUVs in North America because daytime running lights may not deactivate when the headlights are on, potentially causing excess glare.

From Reuters

General Motors said on Wednesday it was recalling 825,000 trucks and SUVs in North America because daytime running lights may not deactivate when the headlights are on, potentially causing excess glare.

From Reuters

GM says in documents posted Wednesday by U.S. safety regulators that daytime running lights that stay on with headlights can cause glare for other drivers, increasing the risk of a crash.

From Seattle Times