(Canada) In some jurisdictions, a type of traffic light signal, in which the green light initially flashes while the matching light for oncoming traffic remains red, signalling drivers that they may make an unobstructed turn across the oncoming lane while the flashing continues.
(bridge) The action of changing the North direction during an event, typically for the last round of a Mitchell movement, so that the pairs who were North-South become East-West and vice versa. This allows a single winning pair to be determined.
(rail transport) The visual indication of a colour light (or mechanical) signal as displayed to the driver. With colour light signals this would be red, yellow or green.
(Britain) A tall black and white pole topped by flashing orange globe, placed on either side of the road at zebra crossings; mostly now replaced by more sophisticated arrangements.
A junction designed to prevent congestion and gridlock. Vehicles may only enter the box-shaped area (usually marked with crossing diagonal lines) if their exit from the junction is clear, or in some cases if they intend to make a turn.
A vehicle registration oval, containing the letters "CD" (for corps diplomatique), indicating that the owner is a foreign embassy and is immune from prosecution
(chiefly UK) A small figure of a walking man illuminated in green on a traffic light at a pedestrian crossing, indicating that it is safe to cross the road.
A purposefully designed timing of a series of traffic lights to produce a green light for cars travelling at the correct speed as they arrive at the lights.
(Britain, Australia) Either of a pair of rectangular metal plates bearing an alphanumeric code, fixed to the front and rear of a motor car to show its identity as registered with the DVLA.
(UK, Australia) A plastic square sticker or sign bearing a large letter P, placed on a vehicle to indicate that the driver only has a provisional or probationary driver's licence.
(UK) A kind of pedestrian crossing with the lights controlling the pedestrians on the near side of the road, rather than on the opposite side, and with sensors to detect the presence of pedestrians.
A semaphore-like signalling device positioned at a road intersection or pedestrian crossing to indicate when to drive, ride or walk, similar in purpose to a traffic light, often run by a person rather than automatic.
(Britain, regional) A pedestrian crossing equipped with traffic lights operated by the pedestrians, same as pelican crossing, but also allowing bicycles to cross.
Initialism of traffic signal box. [(US, Australia) Any of the large metal boxes containing traffic signal controls, found at roadsides and intersections, and often made available by the local council for artistic work.]
(US) The intermediate light in a set of three traffic lights, the illumination of which indicates that drivers should stop short of the intersection if it is safe to do so.
(transportation engineering) A condition in which a traffic signal or signals display a yellow light facing traffic in one direction and a green light facing traffic in the opposite direction at the same intersection. This is considered a poor design because it may give drivers facing the yellow light the false belief that it is safe to turn in front of opposing traffic that has the green light.
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