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  2. Road surface marking - Wikipedia

    en.wikipedia.org/wiki/Road_surface_marking

    These include water, sand, crushed glass, dry ice and soda. High-pressure water blasting method uses 30,000 psi (210 MPa) water jet system on a truck equipped with vacuum heads to blast out the markings and suction up the water and debris back to the storage area of the truck. The method can remove markers at speeds of 2 mph (3.2 km/h).

  3. Raised pavement marker - Wikipedia

    en.wikipedia.org/wiki/Raised_pavement_marker

    The orange markers separate opposing traffic lanes. The blue marker denotes a fire hydrant on the left sidewalk. A raised pavement marker is a safety device used on roads. These devices are usually made with plastic, ceramic, thermoplastic paint, glass or occasionally metal, and come in a variety of shapes and colors.

  4. Lane departure warning system - Wikipedia

    en.wikipedia.org/wiki/Lane_departure_warning_system

    The system debuted in 2000, and is now available on many new cars, SUVs, and trucks. [5] In 2002, the Iteris system became available on Freightliner Trucks' North American vehicles. In both these systems, the driver is warned of unintentional lane departures by an audible rumble strip sound generated on the side of the vehicle drifting out of ...

  5. Road traffic control device - Wikipedia

    en.wikipedia.org/wiki/Road_traffic_control_device

    Tubular markers are cylindrical in shape. They are also orange, with bands of reflective material near the top. They must be at least 18 inches (0.46 m) in height and 2 inches (51 mm) in body diameter. Tubular markers are made of flexible plastic and have a wider base that is glued or screwed to the pavement. They are used in a similar way as ...

  6. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    Often used by utility vehicles such as construction vehicles, garbage trucks, semi-trucks amber marker lights and semi-trucks with big and long trailers, snow plows, funeral escorts and hearses, security patrol vehicles, postal vehicles or other vehicles which may be stopped or moving slower than the flow of traffic.

  7. Survey marker - Wikipedia

    en.wikipedia.org/wiki/Survey_marker

    Survey markers, also called survey marks, survey monuments, or geodetic marks, are objects placed to mark key survey points on the Earth's surface. They are used in geodetic and land surveying . A benchmark is a type of survey marker that indicates elevation ( vertical position ).

  8. Automotive lighting - Wikipedia

    en.wikipedia.org/wiki/Automotive_lighting

    Trucks, vans, and commercial vehicles sometimes have the CHMSL mounted to the trailing edge of the vehicle's roof. The CHMSL is required by regulations worldwide to be centred laterally on the vehicle, though UN Regulation 48 permits lateral offset of up to 15 cm if the vehicle's lateral centre is not coincident with a fixed body panel, but ...

  9. California postmile - Wikipedia

    en.wikipedia.org/wiki/California_postmile

    Los Angeles County uses a postmile system similar to the state’s, but their postmile markers contain a red bar on its top [10] The states of Nevada and Ohio use reference markers very similar to California's postmile markers. Like California, these two states record mileages through individual counties in their respective route logs.