Work zone traffic control design follows MUTCD Part 6 and AZ standard traffic control plans. All work zone designs require a Transportation Management Plan (TMP) for significant projects per FHWA Rule 23 CFR 630 Subpart J. Temporary pavement markings shall be retroreflective tape or paint. Minimum lane width in work zones: 11 ft (10 ft with engineering study). Speed reduction through work zones limited to 10 mph below normal posted speed.
References: AASHTO current edition, AZ Standard Specifications, FHWA Technical Advisories, and applicable federal regulations (23 CFR). Contractors shall maintain current copies of all referenced standards on the project site.
Source: ADOT Highway Design Manual, 2024 Edition. Pages 31–32 of 37.