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VMS systems were deployed at least as early as the 1950s on the New Jersey Turnpike. [3] The road's signs of that period, and up to around 2012, were capable of displaying a few messages in neon, all oriented around warning drivers to slow down: "REDUCE SPEED", followed by a warning of either construction, accident, congestion, ice, snow, or fog at a certain distance ahead. [4]
Some signs can be localized, such as No Parking, and some are found only in state and local jurisdictions, as they are based on state or local laws, such as New York City's "Don't Block the Box" signs. These signs are in the R series of signs in the MUTCD and typically in the R series in most state supplements or state MUTCDs.
The Manual on Uniform Traffic Control Devices for Streets and Highways (usually referred to as the Manual on Uniform Traffic Control Devices, abbreviated MUTCD) is a document issued by the Federal Highway Administration (FHWA) of the United States Department of Transportation (USDOT) to specify the standards by which traffic signs, road surface markings, and signals are designed, installed ...
Japanese stop sign with the word Tomare (止まれ), meaning Stop. Road signs in Japan are either controlled by local police authorities under Road Traffic Law (道路交通法, Dōro Kōtsūhō) or by other road-controlling entities including Ministry of Land, Infrastructure, Transport and Tourism, local municipalities, NEXCO (companies ...
Traffic signs or road signs are signs erected at the side of or above roads to give instructions or provide information to road users. The earliest signs were simple wooden or stone milestones . Later, signs with directional arms were introduced, for example the fingerposts in the United Kingdom and their wooden counterparts in Saxony .
Standard radar speed sign with block letters. Pictured with solar panel.. A radar speed sign or speed feedback sign is an interactive sign comprising a speed-measuring device (e.g. a loop detector or radar) and a message sign generally constructed of a series of LEDs, which displays vehicle speed of approaching motorists. [1]
These signs are often temporary in nature and used to indicate road work (construction), poor roads, or temporary conditions ahead on the road including flagmen, uneven pavement, etc. (Note that some "high water" signs are posted to alert drivers of a flood-prone area and do not actually mean that there is a flooded section of road ahead.)
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.