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Al-Kaisy, A. Two-Lane Highways: Indispensable Rural Mobility. Encyclopedia. Available online: (accessed on 14 June 2024).
Al-Kaisy A. Two-Lane Highways: Indispensable Rural Mobility. Encyclopedia. Available at: Accessed June 14, 2024.
Al-Kaisy, Ahmed. "Two-Lane Highways: Indispensable Rural Mobility" Encyclopedia, (accessed June 14, 2024).
Al-Kaisy, A. (2022, March 15). Two-Lane Highways: Indispensable Rural Mobility. In Encyclopedia.
Al-Kaisy, Ahmed. "Two-Lane Highways: Indispensable Rural Mobility." Encyclopedia. Web. 15 March, 2022.
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Two-Lane Highways: Indispensable Rural Mobility

Two-lane highways refer to roadways consisting of two lanes in the cross section, one for each direction of travel. Occasionally, passing lanes may be added to one or two sides of the roadway extending the cross section to three or four lanes at those locations. In this entry, two-lane highways strictly refer to roads in rural areas meeting the previous definition and do not include urban and suburban streets.

two-lane highways rural passing platooning access mobility low-volume roads

Two-lane highways constitute the vast majority of roadways by length, particularly in rural areas. This is true here in the USA and in most other countries around the world. It is these highways that first brought motor vehicles to remote towns and villages over the past century and played a critical role in the growth and economies of rural communities. The dominance of two-lane highways in the current roadway networks in developed countries is driven by economics and the low level of vehicular traffic common in rural areas.

Two-lane highways serve various highway functions, from local roads serving very low volumes of local traffic to principal arteries connecting towns and small cities, and everything in between. Consequently, these highways vary in their standards, from unpaved highways in very remote areas to high-type pavement and wider cross sections for intercity routes and major arteries.

Two-lane highways, as we know them today, were mainly introduced with the introduction of the automobile. With the increase in motor vehicle traffic and the use of larger vehicles including buses and trucks, the majority of two-lane highways outside remote and frontier rural areas were paved to sustain traffic loads.

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