Megatexture (roads)

Megatexture (roads): Megatexture (MeTx) is a family of wave-shaped road surface characteristics. While vehicle suspension deflection and dynamic tyre loads are affected by longer waves (roughness), road texture affects the interaction between the road surface and the tyre footprint. Megatexture has wavelengths from 50 mm up to 500 mm. Other types of road texture are Microtexture and Macrotexture.

MeTx is a family of surface damages that, similarly to long wave Macrotexture, is a cause of road traffic noise^[1]. MeTx also contribute to poor friction, as it cause variance in the tire normal load. Road agencies monitor MeTx by measurements involving highway speed laser/inertial profilometers.

Line notes

^ Tyre Road Noise Reference Book, by Sandberg and Ejsmont

References

"ISO 13473-2:2002 Characterization of pavement texture by use of surface profiles -- Part 2: Terminology and basic requirements related to pavement texture profile analysis", International Standard available from the website of the International Organization for Standardization

Categories:
Pavements
Automotive technology stubs

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Texture (roads) — Road surface texture is divided into: * Microtexture, with wavelengths up to 0.5 mm * Macrotexture, with wavelengths from 0.5 mm up to 50 mm * Megatexture (roads),with wavelengths from 50 mm up to 500 mm … Wikipedia
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Microtexture — is the collative term for a material s crystallographic parameters and other aspects of microstructure: such as morphology, including size and shape distributions; chemical composition; and crystal orientation and relationships[1] Contents 1… … Wikipedia
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