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The flip-disc display (or flip-dot display) is an electromechanical dot matrix display technology used for large outdoor signs, normally those that will be exposed to direct sunlight. Flip-disc technology has been used for external destination signs on buses and trains across North America , Europe and Australia , as well as for variable ...
6.12 D17 series: Truck lane and slow vehicle signs. 7 Construction information signs. 8 Motorist services. 9 General information. 10 Freeway and expressway signs.
A bumper sticker is an adhesive label or sticker designed to be attached to the rear of a car or truck, often on the bumper. They are commonly sized at around 25.4 cm by 7.6 cm (10 in by 3 in) and are typically made of PVC. Bumper stickers serve various purposes, including personal expression, promotion, humor, or political activism. They ...
Road traffic control devices are markers, signs and signal devices used to inform, guide and control traffic, including pedestrians, motor vehicle drivers and bicyclists. These devices are usually placed adjacent, over or along the highways , roads, traffic facilities and other public areas that require traffic control .
When a vehicle passes over the loop or is stopped within the loop, some of the vehicle's ferrous body material increases the loop's inductance, in the same principle as including a metal core within a solenoid coil. However, the peripheral metal of the vehicle has an opposite effect on the inductance due to eddy currents that are produced. The ...
Vehicle activated sign (VAS) is a generic term for a type of road traffic sign which displays a message conditional upon the presence, or speed, of a road vehicle. The devices are deployed on roadsides like regular traffic signs in various countries.
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