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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.
Road surface markings are used on paved roadways to provide guidance and information to drivers and pedestrians. It can be in the form of mechanical markers such as cat's eyes, botts' dots and rumble strips, or non-mechanical markers such as paints, thermoplastic, plastic and epoxy.
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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). ...
They provide tactile and auditory feedback to drivers when moving across designated travel lanes, and are analogous to rumble strips. Botts' dots are named after Elbert Dysart Botts , a California Department of Transportation (Caltrans) engineer credited with overseeing the research that led to the development of the markers.
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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.