![]() Regulatory Signs, Barricades, and Gates Section 2B.01 Application of Regulatory SignsĠ1 Regulatory signs shall be used to inform road users of selected traffic laws or regulations and indicate the applicability of the legal requirements.Ġ2 Regulatory signs shall be installed at or near where the regulations apply. The sizes in the minimum column shall only be used on local streets or roadways where the 85th-percentile speed or posted speed limit is less than 35 mph. ![]() Colors for guide signs shall follow the Standards in Table 2A-5 and Chapter 2D, except for guide signs as otherwise provided in Section 6F.55.Ġ3 Where the color orange is required, the fluorescent orange color may also be used.Ġ4 The fluorescent version of orange provides higher conspicuity than standard orange, especially during twilight.Ġ5 Existing warning signs that are still applicable may remain in place.Ġ6 In order to maintain the systematic use of yellow or fluorescent yellow-green backgrounds for pedestrian, bicycle, and school warning signs in a jurisdiction, the yellow or fluorescent yellow-green background for pedestrian, bicycle, and school warning signs may be used in TTC zones.Ġ7 Standard orange flags or flashing warning lights may be used in conjunction with signs.Ġ8 When standard orange flags or flashing warning lights are used in conjunction with signs, they shall not block the sign face.Ġ9 Except as provided in Section 2A.11, the sizes for TTC signs and plaques shall be as shown in Table 6F-1. Warning signs in TTC zones shall have a black legend and border on an orange background, except for the Grade Crossing Advance Warning (W10-1) sign which shall have a black legend and border on a yellow background, and except for signs that are required or recommended in Parts 2 or 7 to have fluorescent yellow-green backgrounds. Section 6F.02 General Characteristics of SignsĠ1 TTC zone signs convey both general and specific messages by means of words, symbols, and/or arrows and have the same three categories as all road user signs: regulatory, warning, and guide.Ġ2 The colors for regulatory signs shall follow the Standards for regulatory signs in Table 2A-5 and Chapter 2B. Also, State Departments of Transportation and local agencies might have expanded the NCHRP Report 350 crashworthy criteria to apply to certain other roadside appurtenances.Ġ4 Crashworthiness and crash testing information on devices described in Part 6 are found in AASHTO's "Roadside Design Guide" (see Section 1A.11).Ġ5 As defined in Section 1A.13, "crashworthy" is a characteristic of a roadside appurtenance that has been successfully crash tested in accordance with a national standard such as the NCHRP Report 350, "Recommended Procedures for the Safety Performance Evaluation of Highway Features."Ġ6 Traffic control devices shall be defined as all signs, signals, markings, and other devices used to regulate, warn, or guide road users, placed on, over, or adjacent to a street, highway, private roads open to public travel (see definition in Section 1A.13), pedestrian facility, or bikeway by authority of a public body or official having jurisdiction.Ġ7 All traffic control devices used for construction, maintenance, utility, or incident management operations on a street, highway, or private road open to public travel (see definition in Section 1A.13) shall comply with the applicable provisions of this Manual. Such MUTCD crashworthiness provisions apply to all streets, highways, and private roads open to public travel. The website also contains an "Ask the Experts" section where questions on roadside design issues can be addressed.Ġ3 Various Sections of the MUTCD require certain traffic control devices, their supports, and/or related appurtenances to be crashworthy. ![]() In the case of proprietary items, links are provided to manufacturers' websites as a source of detailed information on specific devices. Temporary Traffic Control Zone Devices Section 6F.01 Types of DevicesĠ1 The design and application of TTC devices used in TTC zones should consider the needs of all road users (motorists, bicyclists, and pedestrians), including those with disabilities.Ġ2 FHWA policy requires that all roadside appurtenances such as traffic barriers, barrier terminals and crash cushions, bridge railings, sign and light pole supports, and work zone hardware used on the National Highway System meet the crashworthy performance criteria contained in the National Cooperative Highway Research Program (NCHRP) Report 350, "Recommended Procedures for the Safety Performance Evaluation of Highway Features." The FHWA website at "" identifies all such hardware and includes copies of FHWA acceptance letters for each of them. Back to Current Edition | Back to Part 6 Table of Contents 2009 Edition Chapter 6F.
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