Abstract
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.
Highlights
Two-lane highways constitute the vast majority of roadways by length, in rural areas
Despite the critical role two-lane highways play in providing access and mobility to rural areas, these highways pose unique challenges for highway agencies in charge of operating and maintaining the roadway network
Given the challenges described above for managing safety on two-lane highways in general, and low-volume roads in particular, the following strategies are recommended to address these challenges [13]:
Summary
Academic Editors: Giuseppe Ruta, Raffaele Barretta, Ramesh Agarwal and Krzysztof Kamil Żur. Two-lane highways constitute the vast majority of roadways by length, in rural areas. This is true here in the USA and in most other countries around the world. 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. 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. 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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