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The Manual on Uniform Traffic Control Devices for Streets and Highways (usually referred to as the Manual on Uniform Traffic Control Devices, abbreviated MUTCD) is a document issued by the Federal Highway Administration (FHWA) of the United States Department of Transportation (USDOT) to specify the standards by which traffic signs, road surface markings, and signals are designed, installed ...
Vienna Convention on Road Signs and Signals; Manual on Uniform Traffic Control Devices, a comparable system in the United States; Health and Safety (Safety Signs and Signals) Regulations, similar regulations for safety signs
In May 1924, the Ohio Department of Highways published Ohio's first sign standard, the Manual of Standard Signs and Markers. The American Association of State Highway Officials would publish the first national Manual and Specifications for the Manufacture, Display, and Erection of U.S. Standard Road Markers and Signs over two years
Local variations occur with additional information and slightly different designs. No Parking signs indicate that loading or unloading while temporarily stopped is permitted, but the driver must not leave the vicinity of the vehicle. [7] Some No Parking signs display time restrictions, while others are permanent restrictions.
Signs in the MUTCD are often more text-oriented, though some signs do use pictograms as well. Canada and Australia have road signs based substantially on the MUTCD. In South America, Ireland, several Asian countries (Cambodia, Japan, Thailand, Malaysia and Indonesia) and New Zealand, road signage is influenced by both the Vienna Convention and ...
List of some standard rules of the road: Entering and leaving roadways. Right of way at marked and unmarked intersections under various conditions. Observing and interpreting traffic signs (especially warning, priority or prohibitory traffic signs) Keeping to right side (or left side) except to pass others, where passing is allowed.
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.
Mandatory action signs in the Americas tend to be influenced by both systems. Nearly all countries in the Americas use yellow diamond warning signs. Recognizing the differences in standards across Europe and the Americas, the Vienna convention considers these types of signs an acceptable alternative to the triangular warning sign. [2]