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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.
Various color schemes for mandatory signs. See image description page for large image and legend. 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.
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 ...
No left turn. Regulatory signs “give a direction that must be obeyed.” [1] Often these signs show a content or action that is either mandatory or prohibited and these two modes are signified by colour (i.e. blue and red), orientation (i.e. a filled circle and an open circle with a diagonal line through the centre) and/or shape (i.e. a square and triangle).
However, some road signs may differ by locale, and mostly diverge from the national standard. For example, the Metropolitan Manila Development Authority (MMDA) has used pink and light blue in its signage for which it has been heavily criticised. [18] [19] Regulatory road signs are generally circular, and most warning signs take the form of a ...
Various color schemes for mandatory signs. Click for large image and detailed info key. The design of mandatory signs varies widely, since the MUTCD does not specify their use. [15] Rather, the MUTCD's equivalent are classified as regulatory signs. Some countries use simple arrows with the text "ONLY" or its equivalent underneath.
In many European countries the dark background with light coloured text version of the sign is intended for information only. [16] Poland uses white text on a green background (E-17a/E18a) to show the political boundary of a place as information and uses the black on white pictogram version (D-42/D-43) to designate the change of traffic rules.