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A white retroreflective raised pavement marker (Stimsonite design) A blue raised pavement marker (for marking the location of fire hydrants) White markers — for lane markings or to mark the right pavement edge. Yellow or orange markers — These separate traffic moving in opposite directions, or mark the left pavement edge on one-way roadways.
In California, highway lanes may be marked either solely by Botts' dots, or dots placed over painted lines. Four dots are used for broken lines on freeways, and broken lines on surface streets may use only three dots. Reflective pavement markers are placed at regular intervals between Botts' dots to increase the visibility of lane markings at ...
Other equipment is often used with road marking machines. The main auxiliary equipment includes thermoplastic paint pre-heaters, hand-push pre-markers and road marking removers. Thermoplastic paint pre-heater is used to melt the solid powder coating into a viscous liquid, providing a steady supply of paint to the marking machine.
Raised pavement marker or raised reflective marker A road surface marker used on roads, usually made with plastic, ceramic, thermoplastic paint or occasionally metal, and come in a variety of shapes and colors. Ramp. See slip road. Ramp meter A device that regulates the flow of traffic entering a freeway. Ranch-to-market road or ranch road
Channelization of at-grade intersections is the separation or regulation of conflicting traffic movements into definite paths of travel by the use of pavement markings, raised islands, or other suitable means to facilitate the safe and orderly movement of both vehicles and pedestrians.
Shoulder and centerline rumble strips are used to reduce lane departure crashes. Centerline rumble strips are used on undivided highways to reduce cross-over incidents and resultant head-on collisions. Shoulder rumble strips are used primarily to reduce run-off-road collisions. They alert distracted or drowsy drivers that they are leaving the ...
Slow or stop when the vehicle is disabled and traffic or other circumstances prohibit the safe movement of the vehicles to the shoulder to the right of the main traveled portion of the roadway.
Yellow or amber markers — These are found next to the central reservation (US: median) on motorways and dual carriageways and, in the Republic of Ireland, are also used on hard shoulders. Red markers — These are found by the hard shoulder on motorways and at the edge of the running surface on other roads.