Manual on Uniform Traffic Control Devices: Difference between revisions

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The '''''Manual on Uniform Traffic Control Devices'' (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 sign]]s, [[road]] markings (see [[lane]]), and [[traffic light|signals]] are designed, installed, and used. These specifications include the shapes, colors, and fonts used in road markings and signs. In the [[United States]], all traffic control devices must generally conform to these standards. The manual is used by state agencies as well as private construction firms to ensure that the traffic control devices they use conform to the national standard. While some state agencies have developed their own set of standards, these must be in substantial conformance with the MUTCD®.

== History ==

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Government action to begin resolving the wide variety of signage that had cropped up did not occur until the early 1920s, when groups from Indiana, Minnesota, and Wisconsin began surveying the existing road signs in order to develop a standard. They reported their findings to the Mississippi Valley Association of Highway Departments, which adopted the report's suggestions for the shapes to be used for road signs. These suggestions included the familiar circular railroad crossing sign and octagonal stop sign.

In 1927, the [[American Association of State Highway and Transportation Officials|American Association of State Highway Officials]], or AASHO, published the ''Manual and Specifications for the Manufacture, Display, and Erection of U.S. Standard Road Markers and Signs'' to set standards for traffic control devices used on rural roads. This was followed by the ''Manual on Street Traffic Signs, Signals, and Markings'', which set similar standards for urban settings. While these manuals set similar standards for each environment, the use of two manuals was decided to be unwieldy, and so the AASHO began work in 1932 with the [[National Conference on Street and Highway Safety]], or NCSHS, to develop a uniform standard for all settings. This standard was the MUTCD®.

The MUTCD® was first released in 1935, and set standards for both road signs and pavement markings. Since that time, eight more editions of the manual have been published with numerous minor updates occurring between, each taking into consideration changes in usage and size of the nation's system of roads as well as improvements in technology.

In 1966, Congress passed the Highway Safety Act, P.L. 89-564, 72 Stat. 885 (1966), which is now codified at 23 U.S.C. § 401 ''et seq.'' It required all states to create a highway safety program by [[December 31]], [[1968]], and to adhere to uniform standards promulgated by the U.S. Department of Transportation as a condition of receiving federal highway-aid funds.<ref>Edward C. Fisher, Vehicle Traffic Law (Evanston, IL: Traffic Institute, Northwestern University, 1961) (1967 supp.): 11.</ref> The penalty for noncompliance was a 10% reduction in funding. In turn, taking advantage of broad rulemaking powers granted in 23 U.S.C. § 402, the Department simply adopted the entire MUTCD by reference at 23 CFR § 655.603. Thus, what was formerly a quasi-official project became an official one. States are allowed to supplement the MUTCD but must remain in "substantial conformance" with the national MUTCD® and adopt changes within two years after they are adopted by FHWA.

The [[National Committee on Uniform Traffic Control Devices]] (NCUTCD) advises FHWA on additions, revisions, or changes to the MUTCD.

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== Other jurisdictions ==

The '''Transportation Association of Canada (TAC)''' publishes a ''Manual of Uniform Traffic Control Devices'' for use by Canadian jurisdictions. Although it serves a similar role to the FHWA MUTCD®, it has been independently developed and has a number of key differences with its American counterpart, most notably the inclusion of bilingual (English/French) signage for jurisdictions such as [[New Brunswick]] with significant [[English language|anglophone]] and [[French language|francophone]] population, and a much heavier reliance on symbols rather than text legends.

The '''Ministry of Transportation of Ontario (MTO)''' also has historically used its own MUTCD which bore many similarities to the TAC MUTCD®. However, as of approximately 2000 they have been developing the ''Ontario Traffic Manual'' (OTM), a series of smaller volumes each covering different aspects of traffic control (e.g., regulatory signs, warning signs, sign design principles, traffic signals, etc.).

==References==