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A jack post (telepost, adjustable steel column) is a steel post used in the construction trades for temporary support of ceilings, walls and trenches ().They are designed to be able to mechanically telescope to about twice their shortest length in order to span a wide variety of spaces.
Unipole (or monopole) sign is an advertising sign (usually billboard) frame structure mounted atop a single steel pole or column. The Uni-pole is a large-format billboard type placed atop a very high pole. Its effectiveness is enhanced by the fact that this billboard can be seen even from long distances. There are two options when it comes to ...
A street name sign is a type of traffic sign used to identify named roads, generally those that do not qualify as expressways or highways. Street name signs are most often found posted at intersections ; sometimes, especially in the United States, in perpendicularly oriented pairs identifying each of the crossing streets.
In Québec, however, signs are angled slightly face-down towards the roadway such that the sign face is directed towards the motorists below. In New Brunswick, the opposite is true: signs are angled slightly face-up to capture and reflect more sunlight towards the roadway. The colors of the gantry sign may indicate different things in Canada.
A crossbuck is a traffic sign used to indicate a level railway crossing. It is composed of two slats of wood or metal of equal length, fastened together on a pole in a saltire formation (resembling the letter X). Crossbucks are often supplemented by electrical warnings of flashing lights, a bell, and/or a boom barrier that descends to block the ...
Cars are beginning to feature cameras with automatic traffic sign recognition, beginning 2008 with the Opel Insignia. It mainly recognizes speed limits and no-overtaking areas. [10] It also uses GPS and a database over speed limits, which is useful in the many countries which signpost city speed limits with a city name sign, not a speed limit sign.
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