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The North Luzon Expressway's raised plastic transverse rumble strips approaching Balintawak Toll Barrier, Philippines. Rumble strips (also known as sleeper lines or alert strips) are a traffic calming feature to alert inattentive drivers of potential danger, by causing a tactile fuzzy vibration and audible rumbling transmitted through the wheels into the vehicle interior.
Using milling instead of other methods, such as rolling them in, means that the rumble strips can be added at any time after the road surface has hardened. [ 8 ] Another example is to modify the roto-milling head to create slots in concrete slabs for the dowel bar retrofit process.
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.
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In some countries major roads have "tone bands" impressed or cut into the edges of the legal roadway, so that drowsing drivers are awakened by a loud hum as they release the steering and drift off the edge of the road. Tone bands are also referred to as "rumble strips", owing to the sound they create. An alternative method is the use of "Raised ...
Jimmy Butler #22 of the Miami Heat looks on during the game against the Toronto Raptors on December 1, 2024 at the Scotiabank Arena in Toronto, Ontario, Canada.
Johnnie Walker, a former BBC Radio 2 DJ known for hosting the “Sounds of the 70s” show, died Monday. He was 79. The news was announced live on the station by Bob Harris, who took over Johnnie ...
Transverse rumble strip (usually placed before junctions, toll plaza or high density areas) Shoulder rumble strips (usually placed on highways at very hazardous areas)