green light


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green light

permission to go ahead with a project.
The green light referred to is the traffic signal indicating that traffic is free to move forward. Red and green lights were in use from the late 19th century in railway signals, but this figurative use of green light appears to date from the mid 20th century.
1997 New Scientist Zemin even got the green light to buy nuclear power plants.
See also: green, light

green light

n. the signal to go ahead with something; the okay. (see also go-ahead, high sign.) When we get the green light, we’ll start.
See also: green, light
References in periodicals archive ?
The green light for the fourth quarter last year is the first appearance of the light since the first quarter 2007, as the market, as a whole, had remained in the doldrums subsequently.
The waterfront wheel was lit up with green lights to mark the Patron Saint's day.
l As for the situation where a green light is switched on, when the exit is still not clear for traffic movement, the drivers should obey traffic rules by not proceeding to the yellow box area as this will create a traffic jam.
A council spokesman said: "The traffic signal contractor has had problems with vandalism throughout the country and, as the green light is the lowest, this tends to be targeted the most.
The council gave it the green light after hearing there was a lack of suitable brownfield sites for the development.
I believe it was a doctor but wonder why we never see doctors driving with green lights locally.
Sensitive film: blue or green light, type: radiographic, width: 14 inches (s) length: 17 inches (s).
Planners yesterday gave the green light for the redevelopment of the old fire station on Manchester Road in Marsden.
BIRMINGHAM has been given the green light to create a Dutch-style drinking experience for two weeks.
The red squelches fluorescence from the green light anywhere the pulses overlap.
Radiographic film sensitive to green light 10x12,radiographic film sensitive to green light 11x14,radiographic film sensitive to green light 14x17,radiographic film sensitive to green light 8x10 etc.
Cork Airport yesterday announced it will be fully behind the festivities by bathing its terminal in green light for the celebrations.
Larry Chimbole, 83, suffered a broken collarbone and a head injury Thursday afternoon at Pearblossom Highway and Barrel Springs Road when his car was hit as he pulled away from a green light, his wife said.
About 2 percent of white men can't distinguish green and red because they are missing the cone cells tuned to green light.
The Stephens County Commissioners gave the green light to a contract on October 20, 2014 with Computer Mapping Company for support services for Mapping and Information Management System software.