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Warning signs indicate possible dangers or unusual conditions ahead and alert motorists, so they may anticipate the appropriate actions to take. They are usually shaped as triangles with a red border, and mounted on a borderless white backing board, which is similar to the United Kingdom traffic sign.
The Public Warning System (PWS) is a network of civil defense sirens installed by the Singapore Civil Defence Force on over 2,000 strategic points in Singapore to warn Singaporeans of impending dangers, air raids and atomic bomb blasts. Thus far, the siren network has only been used for occasional public awareness drills, monthly noon chimes ...
Variations in traffic light operation. Swedish traffic light (left) for use by public transport vehicles only. All signals use white lighting and special symbols ("S", "–" and an arrow) to distinguish them from regular signals. The small light at the top tells the driver when the vehicle's transponder signal is received by the traffic light.
A warning sign is a type of sign which indicates a potential hazard, obstacle, or condition requiring special attention. Some are traffic signs that indicate hazards on roads that may not be readily apparent to a driver. [1]
The signals must be arranged red, amber, and green vertically (top to bottom) or horizontally (left to right). In the US, a single-aspect flashing amber signal can be used to raise attention to a warning sign and a single-aspect flashing red signal can be used to raise attention to a "stop", "do not enter", or "wrong way" sign.
Civil defense siren. TWS 295 Sirens, HSS Engineering siren Warning System. Federal Signal Thunderbolt 1003. There are 8,200 alarm sirens for civil protection throughout Switzerland. They are tested once a year on the first Wednesday in February. [1] Sound sample ⓘ. A civil defense siren is a siren used to provide an emergency population ...
Level crossing signals are the electronic warning devices for road vehicles at railroad level crossings . Level crossings can be operated in various ways. In some countries such as the UK, the warning devices are more often than not activated by remote control, I.e. an operator pressing buttons. However, the majority of countries have automated ...
Comparison of traffic signs in English-speaking territories. This is a comparison of road signs in countries and regions that speak majorly English, including major ones where it is an official language and widely understood (and as a lingua franca ). Among the countries listed below, Liberia, Nigeria, and the Philippines have ratified the ...