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2. Raised pavement marker - Wikipedia

   en.wikipedia.org/wiki/Raised_pavement_marker

   Raised reflective markers, such as plastic, ceramic, or metal ones, include a lens or sheeting that enhances their visibility by retroreflecting automotive headlights, while glass road studs gather automotive headlights with a dome shape and reflect the lights with a reflective layer within.

3. Retroreflective sheeting - Wikipedia

   en.wikipedia.org/wiki/Retroreflective_sheeting

   Flash photo of car with reflective stickers Flash photo of moped with retroreflective sheeting tape Retroreflective sheeting is flexible retroreflective material primarily used to increase the nighttime conspicuity of traffic signs , high-visibility clothing , and other items so they are safely and effectively visible in the light of an ...

4. Road traffic control device - Wikipedia

   en.wikipedia.org/wiki/Road_traffic_control_device

   Delineators are small reflective panels mounted on lightweight metal posts or flexible plastic tubes used to outline roadways and paths. These are about 1.2 metres (3 ft 11 in) high. In the USA, yellow reflective material is used for delineators on the left of the road, and white delineators are used to the right of traffic.

5. Traffic cone - Wikipedia

   en.wikipedia.org/wiki/Traffic_cone

   28 in (711 mm), 10 lb (4.5 kg) – for freeway/highway applications (with reflective stripes) 36 in (914 mm), 10 lb (4.5 kg) – for freeway/highway applications (with reflective stripes) In New Zealand, they are compliant in two sizes for use on all roads; these are: 35 in (900mm), up to 16.5 lb (7 kg) - for all activities on all roads.

6. Road surface marking - Wikipedia

   en.wikipedia.org/wiki/Road_surface_marking

   A rumble strip can be a series of simple troughs, typically 1 cm (0.4 in) deep and 10 cm (4 in) wide, that is ground out of the asphalt. Other alternatives, similar to the Botts' dots, use raised strips, painted or glued to the surface. A specific form of raised strips using thermoplastic is called profile thermoplastic markings.

7. Glass bead road surface marking - Wikipedia

   en.wikipedia.org/wiki/Glass_bead_road_surface...

   Structure of glass bead matrix and interactions with metal ions. The synthesis of these beads begins when calcium carbonate is heated to anywhere from 800 to 1300 C. This heating causes a decomposition reaction which forms solid calcium oxide and releases carbon dioxide gas.