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A variable message sign warning drivers of a lane closure on the M25. The early merge method dictates that one stream of traffic will maintain priority over another at the merge, and therefore traffic in the other lane should merge at the first opportunity. To encourage drivers to merge early, authorities may employ a static or dynamic early ...
11th edition of the MUTCD, published December 2023. In the United States, road signs are, for the most part, standardized by federal regulations, most notably in the Manual on Uniform Traffic Control Devices (MUTCD) and its companion volume the Standard Highway Signs (SHS).
New signs on N.C. 147 encourage people to “merge like a zipper,” as they approach Interstate 85 South. The N.C. Department of Transportation is using the signs as an experiment in the hopes of ...
Almost all prohibitory signs use a red circle with a slash. Restrictive signs typically use a red circle, as in Europe. Some may be seated on a rectangular white background. The original MUTCD prohibitory and restrictive signs were text-only (i.e. NO LEFT TURN). [14] Some of these signs continue to be used in the US.
A common way of warning that an obscured traffic light ahead is red is a red-signal-ahead sign. It is shaped like a standard yellow diamond shape sign with LEDs spelling out "Signal Ahead". Just before the traffic light goes yellow, the word "Red" will light up above Signal Ahead and they will begin to flash alternately.
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Most signs are based on pictograms, with some exceptions like the prohibition-sign for stop at customs and signal and speed limit signs. If the sign includes text, the text is written in Swedish, except the stop sign, which is written in English ("STOP"). Swedish road signs depict people with realistic (as opposed to stylized) silhouettes.