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Traffic sign design

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Traffic sign design

Traffic sign design involves any tasks in the process of designing traffic signage. Traffic signs may provide information about the law, warn about dangerous conditions and guide roadway users. Traffic signs vary depending upon their use, using different symbols, colors and shapes for easy identification.

Regulatory signs “give a direction that must be obeyed.” 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). In the UK, positive upright signs are generally circular with a white border and symbol on a blue background. In Ontario, Canada, positive signs have a green circle. The colour red is used almost universally to prohibit a certain activity, however a vide variety of designs exist even for most stop signs. In the United States, regulatory signs usually have a white background.

Warning signs give a warning of that there are dangerous or unusual conditions ahead (a curve, turn, dip or sideroad). They are usually diamond-shaped and have a yellow background with black letters or symbols.

Often these signs have a greater more conspicuous presence than a regulatory sign. These signs often do not have much text on them, as they should be internationally understood due to the nature of the message that they are conveying.

Information signs give information about direction and distance, usually guiding drivers to destinations, facilities, services and attractions. Often these signs have names of locations with an arrow pointing towards the direction of the destination and a number giving the approximate distance.

In the United States, these signs typically have a green background. Signs giving direction to roadside services, such as rest areas and fuel stations, have blue backgrounds, while signs providing guidance to recreational locations have brown backgrounds.

These non-permanent temporary signs are erected to warn drivers of unexpected conditions such as road work zones, diversions, detours, lane closures and traffic control.

Often these signs are portable and can also be digital variable message signs. In the United States, these signs are typically orange in color.

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