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  2. Road signs in the United States - Wikipedia

    en.wikipedia.org/wiki/Road_signs_in_the_United...

    W18-1 No traffic signs. ... CW21-1 Workers (symbol sign) CW21-1a Workers (text sign) CW21-2 ... Travel info call 511. D12-6 Roadside assistance.

  3. Manual on Uniform Traffic Control Devices - Wikipedia

    en.wikipedia.org/wiki/Manual_on_Uniform_Traffic...

    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 ...

  4. Traffic sign design - Wikipedia

    en.wikipedia.org/wiki/Traffic_sign_design

    These non-permanent temporary signs are erected to warn drivers of unexpected conditions such as road work zones, diversions, detours, lane closures and traffic control. Often these signs are portable and can also be digital variable message signs. [1] In the United States, these signs are typically orange in color.

  5. Traffic sign - Wikipedia

    en.wikipedia.org/wiki/Traffic_sign

    Signs and markings British traffic signs from the Highway Code; Danish traffic signs Archived 2016-12-20 at the Wayback Machine; securite-routiere.gouv.fr (in French) Know Your Traffic Signs - Department for Transport (UK) German traffic signs and signals; Norma 8.,1-IC Style manual for road signs in Spain (in Spanish)

  6. Rules of the Road: Do we really need all those traffic signs ...

    www.aol.com/rules-road-really-those-traffic...

    Traffic signs go up when the law requires them, or an engineer does the math and decides it’s the right thing for that location. Show comments. Advertisement. Advertisement. In Other News.

  7. Vienna Convention on Road Signs and Signals - Wikipedia

    en.wikipedia.org/wiki/Vienna_Convention_on_Road...

    The convention revised and substantially extended the earlier 1949 Geneva Protocol on Road Signs and Signals, [1] itself based in turn on the 1931 Geneva Convention concerning the Unification of Road Signals. Amendments, including new provisions regarding the legibility of signs, priority at roundabouts, and new signs to improve safety in ...