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These signs are often temporary in nature and used to indicate road work (construction), poor roads, or temporary conditions ahead on the road including flagmen, uneven pavement, etc. (Note that some "high water" signs are posted to alert drivers of a flood-prone area and do not actually mean that there is a flooded section of road ahead.)
The MUTCD's W11 series of signs is for warning signs relating to advance warnings. The MUTCD allows use of a fluorescent yellow-green background color for signs relating to non-motorized vehicles crossing the road. [8] As not all situations are covered, several states have their own standards in addition to the MUTCD.
Sheep road sign in the United Kingdom. Countries in yellow use MUTCD-style diamond warning signs. Click for large image and detailed info key. Most warning signs are diamond-shaped and yellow or red-bordered triangular warning signs; some warning signs may be fluorescent yellow-green in order to draw extra attention.
In 1956, warning road signs in the Republic were changed from the UK standard with the adoption of US-style "diamond" signs for many road hazard warnings. [27] A number of regulatory signs were also introduced. Directional signage is similar to current United Kingdom standards, in that the same colours and typefaces are used.
Irish rural speed limit sign on a local road Sometimes similar signs have minor differences in meanings, following the local traffic codes. For example, the Irish "rural speed limit" sign for local tertiary roads takes the appearance of that used to denote the end of all previously signed restrictions used elsewhere in Europe.
Traffic cones are typically used outdoors during road work or other situations requiring traffic redirection or advance warning of hazards or dangers, or the prevention of traffic. For night time use or low-light situations traffic cones are usually fitted with a retroreflective sleeve to increase visibility.
Diamond lanes are generally the right-most or left-most lane on the road. They are usually implemented to provide ways through traffic congestion, for safety reasons, and to encourage environmentally friendly transportation. A diamond lane may be intended for a specific type of traffic, or for several types.
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.