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Manual on Uniform Traffic Control Devices

Manual on Uniform Traffic Control Devices. Aren Cambre 11-3-04. What is MUTCD?. “the national standard for all traffic control devices” Defines TCDs in detail: Fonts and appearance Positioning Usage Originates from 1927 document for rural roads Current version is 2003 ed., rev. 1.

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Manual on Uniform Traffic Control Devices

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  1. Manual on Uniform Traffic Control Devices Aren Cambre 11-3-04

  2. What is MUTCD? • “the national standard for all traffic control devices” • Defines TCDs in detail: • Fonts and appearance • Positioning • Usage • Originates from 1927 document for rural roads • Current version is 2003 ed., rev. 1

  3. Availability • Available online at http://mutcd.fhwa.dot.gov.

  4. Requirement to Follow • Per 1966 Highway Safety Act, all public roadways must be in “substantial conformance”. • No compliance = no federal funds. • Four levels of compliance: • Standard: must follow • Guidance: recommended • Option: “statement of practice,” may be used to modify standard of guidance • Support: informational, not required

  5. State MUTCD? • States may have their own MUTCD. • Must comply with federal MUTCD. • Must comply with federal MUTCD changes within 2 years. • Texas MUTCD: http://www.dot.state.tx.us/trf/mutcd.htm

  6. Parts of MUTCD • MUTCD divided into 10 parts and an appendix.

  7. Part 1: General • Overall concepts, like: • Purpose • Design • Principles • Placement • Operation • Definitions • Primacy of engineering judgment • Appropriate abbreviations

  8. Part 1: Standard Colors • Black—regulation • Blue—road user services guidance, tourist information, and evacuation route • Brown—recreational and cultural interest area guidance • Coral—unassigned • Fluorescent Pink—incident management • Fluorescent Yellow-Green—pedestrian warning, bicycle warning, playground warning, school bus and school warning • Green—indicated movements permitted, direction guidance • Light Blue—unassigned • Orange—temporary traffic control • Purple—unassigned • Red—stop or prohibition • White—regulation • Yellow—warning

  9. Part 1: Inappropriate Abbreviations

  10. Part 2: Signs • 9 sections • First section is “general”: again, definitions and housekeeping • Organized by sign type

  11. Regulatory Signs • Describe legal requirements to motorist. • Disregarding sign is usually a violation of law.

  12. Speed Limit • Speed limit is a regulatory sign • Standard • “After an engineering study has been made in accordance with established traffic engineering practices, the Speed Limit sign shall display the limit established by law, ordinance, regulation, or as adopted by the authorized agency. The speed limits shown shall be in multiples of 10 km/h or 5 mph.”

  13. Speed Limit • Guidance • At least once every 5 years, States and local agencies should reevaluate non-statutory speed limits on segments of their roadways that have undergone a significant change in roadway characteristics or surrounding land use since the last review. • No more than three speed limits should be displayed on any one Speed Limit sign or assembly. • When a speed limit is to be posted, it should be within 10 km/h or 5 mph of the 85th-percentile speed of free-flowing traffic.

  14. Other Regulatory Signs

  15. Warning Signs • Informational • Warn of conditions motorists may not catch.

  16. Guide Signs (Conventional) • Mostly directional or information.

  17. Guide Signs (Freeways)

  18. Specific Service Signs

  19. Tourist-Oriented Directional Signs

  20. Recreational and Cultural-Interest Signs

  21. Emergency Management Signs

  22. Sign Positioning

  23. Part 3: Markings • Describes “pavement and curb markings, object markers, delineators, colored pavements, barricades, channelizing devices and islands.”

  24. Markings Layout

  25. Yield Line

  26. Traffic Island

  27. Object Markers

  28. Part 4: Highway Traffic Signals • Applies to “any highway traffic signal by which traffic is alternately directed to stop and permitted to proceed.” • Includes: • Traditional traffic signals. • Pedestrian signals. • Lane-use signals. • Flashing beacons.

  29. Typical Signal Head Arrangements

  30. Part 5: TCDs for Low Volume Roads • Mainly recreational, farm-to-market, or county roads. • Essentially a relaxed set of the prior requirements.

  31. Part 6: Temporary Traffic Control • Mostly construction zones signage and pavement markings.

  32. Flagging

  33. Temporary Signs

  34. Suggested Layouts

  35. Incident Management Areas • Part 6 also includes the pink signs.

  36. Part 7: School Areas

  37. Part 8: Highway-Rail Grade Crossings

  38. Part 9: Bicycle Facilities

  39. Part 10: Light Rail Crossings

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