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The Civilian Conservation Corps built an 800 mile long firebreak called Ponderosa Way during the Great Depression. [1] This firebreak runs through part of Oregon and California. [2] [3] [4] The Civilian Conservation Corps was created in 1933 to put unemployed men to work. Much of Ponderosa Way has fallen into disrepair.
The state highway system of the U.S. state of California is a network of highways that are owned and maintained by the California Department of Transportation (Caltrans). Each highway is assigned a Route (officially State Highway Route [ 1 ] [ 2 ] ) number in the Streets and Highways Code (Sections 300–635) .
All of the unsigned Interstates in Alaska and Puerto Rico are exempt from Interstate Highway standards and are instead, per Title 23, Chapter 1, Section 103 of the U.S. Code, "designed in accordance with such geometric and construction standards as are adequate for current and probable future traffic demands and the needs of the locality of the ...
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"Timeline of Federal Motor Vehicle Safety Standards by Year and Notable Technologies" (PDF). National Highway Traffic Safety Administration. 2012. Archived from the original (PDF) on 2021-06-24; Tests for compliance with various FMVSS (broken has to be fixed) Overview of CMVSS at Transport Canada
Entrances and exits to the highway are provided at interchanges by slip roads (ramps), which allow for speed changes between the highway and arterials and collector roads. On the controlled-access highway, opposing directions of travel are generally separated by a median strip or central reservation containing a traffic barrier or grass.
A rut is a depression or groove worn into a road or path by the travel of wheels or skis. Ruts can be formed by wear, as from studded snow tires common in cold climate areas, or they can form through the deformation of the asphalt concrete, pavement or subbase material. In modern roads the main cause is heavily loaded trucks.
The Manual on Uniform Traffic Control Devices for Streets and Highways (usually referred to as the Manual on Uniform Traffic Control Devices, abbreviated MUTCD) is a document issued by the Federal Highway Administration (FHWA) of the United States Department of Transportation (USDOT) to specify the standards by which traffic signs, road surface markings, and signals are designed, installed ...