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The CTCDC is the successor to the California State Sign Committee, which was originally responsible for highway signage from 1933 to 1947. [3] The ten-member committee consists of representatives designated by Caltrans, the League of California Cities , the County Engineers Association of California , the Automobile Club of Southern California ...
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 ...
An Interstate Highway under construction , with both directions of traffic moved to one side of the roadway I-94 in Michigan, showing examples of non-interchange overpass signage in median, upcoming exit signage on right shoulder, a pre-1960 overpass with height restriction signage, newly installed cable median barrier, and parallel grooved ...
The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test protocols, and guidelines that are used in highway design and construction throughout the United States. Despite its name, the association represents not only highways but air, rail, water, and public ...
Jersey barriers on the road. A Jersey barrier, Jersey wall, or Jersey bump is a modular concrete or plastic barrier employed to separate lanes of traffic.It is designed to minimize vehicle damage in cases of incidental contact while still preventing vehicle crossovers resulting in a likely head-on collision.
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.
California voters approved an $18 million bond issue for the construction of a state highway system in 1910, and the first California Highway Commission was convened in 1911. [7] On August 7, 1912, the department broke ground on its first construction project, the section of El Camino Real between South San Francisco and Burlingame , which ...
The California Highway Commission was established in 1895 and continued until 1978 as the primary California government agency responsible for state highway planning. It exercised jurisdiction over the California state highway system , especially highway routes, while the Department of Highways, established in 1896, constructed and maintained ...