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Yellow diamond with black symbol White background red triangle with black symbol Amber background red triangle with black symbol. General warning signs are used in instances in which the particular hazard, obstacle or condition is not covered by a standard sign.
Warning signs in China are triangular with a black border, yellow background and black symbol. Mandatory signs generally follow European conventions (circular with red border/blue circle) with some local variations. Direction signs have these colours: Green for expressways; Brown for tourist attractions; Blue for other roads
Mandatory signs are road signs that are used to set the obligations of all traffic that uses a specific area of road. Most mandatory road signs are circular in shape and may use white symbols on a blue background with a white border, or black symbols on a white background with a red border, although the latter is also associated with prohibitory signs.
Before the development of reflective plastics, reflectivity was provided by glass reflectors set into the lettering and symbols. New generations of traffic signs based on electronic displays can also change their text (or, in some countries, symbols) to provide for "intelligent control" linked to automated traffic sensors or remote manual input.
In the UK, positive upright signs are generally circular with a white border and symbol on a blue background. [2] In Ontario, Canada, positive signs have a green circle. [1] The colour red is used almost universally to prohibit a certain activity, however a vide variety of designs exist even for most stop signs.
More than 100 pages use this file. The following list shows the first 100 pages that use this file only. A full list is available.. 2011 military intervention in Libya
Overtaking is prohibited either for all vehicles or for certain kinds of vehicles only (e.g. lorries, motorcycles). In the USA, this is usually phrased as "no passing zone" and indicated by a rectangular, black-on-white sign on the right side of the road that says "DO NOT PASS", and/or by a solid yellow line painted on the roadway marking the left limit of traffic (centerline), and sometimes ...
Map symbols can thus be categorized by how they suggest this connection: [6] [7] Iconic symbols (also "image", "pictorial", or "replicative") have a similar appearance to the real-world feature, although it is often in a generalized manner; e.g. a tree icon to represent a forest, brown denoting desert, or green denoting vegetation.