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Regulatory traffic signs within the United States must comply with the federal Manual on Uniform Traffic Control Devices (MUTCD) or the State MUTCD, depending on the state in which the sign is installed. These signs typically have a white background with black or red legends (legends include text, symbols, graphics not part of the background ...
Signs including Stop, Yield, No Turns, No Trucks, No Parking, No Stopping, Minimum Speed, Right Turn Only, Do Not Enter, Weight Limit, and Speed Limit are considered regulatory signs. Some have special shapes, such as the octagon for the Stop sign and the crossbuck for railroad crossings.
A "pass on the left" sign embedded into an illuminated plastic bollard in the United Kingdom. Mandatory signs are a subset of the regulatory sign group as defined by the United Nations Economic and Social Council in the Vienna Convention on Road Signs and Signals of 1968, and are often seen not just on their own, but used in conjunction with other signs, traffic lights and bollards as a form ...
The design of mandatory signs varies widely, since the MUTCD does not specify their use. [1] Rather, the MUTCD's equivalent are classified as regulatory signs. Some countries use simple arrows with the text "ONLY" or its equivalent underneath. This is the MUTCD standard. Some countries use European-style white-on-blue circular signs.
Regulatory road signs are generally circular, and most warning signs take the form of a triangle. Since 2012, however, a more visibly distinctive design (taken from that used for school signs in the US) has been adopted for pedestrian-related signs: these consist of a fluorescent yellow-green pentagon with black border and symbol.
In the U.S., Stop and speed limit signs fall under the R Series (Regulatory). Modern U.S. signs are widely standardized; unless they are antique holdovers from an earlier era, oddities like a yellow Stop sign or a red Slippery When Wet sign would typically appear only on private property—perhaps at a hospital campus or in a shopping mall ...
A FBI document obtained by Wikileaks details the symbols and logos used by pedophiles to identify sexual preferences. According to the document members of pedophilic organizations use of ...
The representation of only a single meaning for a single sign. Good singular functionality means that a sign that gives information should not also imply a regulatory meaning or another piece of related information. [8] This means that a school zone warning sign only provides a warning that there is a school nearby.