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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.
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.
Rumble Strips may refer to: Rumble strip, the road safety feature; The Rumble Strips, the British band This page was last edited on 29 December 2019, at 23:58 (UTC). ...
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Transverse rumble strip (usually placed before junctions, toll plaza or high density areas) Shoulder rumble strips (usually placed on highways at very hazardous areas) Touch n Go marker (at toll plazas)
The earliest known rumble strips were built in 1952 on the north and south lanes of the Garden State Parkway in New Jersey. They consisted of three-foot strips of corrugated concrete that would produce a distinct humming sound when driven over, and also serve as reflectors for increased visibility. [8]
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.
Washboarding effect on a road. Washboarding or corrugation [1] is the formation of periodic, transverse ripples in the surface of gravel and dirt roads.Washboarding occurs in dry, granular road material [2] with repeated traffic, traveling at speeds above 8.0 kilometres per hour (5 mph). [3]