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  2. Dirt road - Wikipedia

    en.wikipedia.org/wiki/Dirt_road

    Unpaved roads with a harder surface made by the addition of material such as gravel and aggregate (stones), might be referred to as dirt roads in common usage but are distinguished as improved roads by highway engineers. Improved unpaved roads include gravel roads and macadamized roads. [citation needed]

  3. Gravel road - Wikipedia

    en.wikipedia.org/wiki/Gravel_road

    A gravel road in Asikkala, Finland. A gravel road is a type of unpaved road surfaced with gravel that has been brought to the site from a quarry or stream bed.Gravel roads are common in less-developed nations, and also in the rural areas of developed nations such as Canada and the United States.

  4. Road surface - Wikipedia

    en.wikipedia.org/wiki/Road_surface

    A road of such material is called a "metalled road" in Britain, a "paved road" in Canada and the US, or a "sealed road" in parts of Canada, Australia and New Zealand. [ 48 ] A granular surface can be used with a traffic volume where the annual average daily traffic is 1,200 vehicles per day or less.

  5. Washboarding - Wikipedia

    en.wikipedia.org/wiki/Washboarding

    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]

  6. From the archives: Unpaved roads and Wilmington's 'general ...

    www.aol.com/archives-unpaved-roads-wilmingtons...

    According to a story in the Jan. 7, 1971, edition of the Wilmington Morning Star, around 23 miles of Wilmington’s roads remained unpaved despite more than $200,000 of state funds earmarked to ...

  7. Unpaved road - Wikipedia

    en.wikipedia.org/wiki/Unpaved_road

    Unpaved roads may refer to: Dirt roads; Gravel roads This page was last edited on 14 March 2023, at 04:09 (UTC). Text is available under the Creative Commons ...

  8. Program available to reduce unpaved roads' erosion - AOL

    www.aol.com/news/program-available-reduce...

    May 21—A report published earlier this year by the Intergovernmental Panel on Climate Change made it clear a warming climate will impact global water resources. While rising sea levels soak up ...

  9. List of countries by road network size - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_road...

    This is a list of countries (or regions) by total road network size, both paved and unpaved. Also included is additional data on road network density and the length of each country or region's controlled-access highway network (also known as a motorway, expressway, freeway, etc.), designed for high vehicular traffic.