AI for traffic control companies, tested on permits and field tickets you already closed.

One manual sits behind the whole shoulder. OSHA's construction rules, at 29 CFR 1926.200(g) and 1926.201(a), hold devices used to protect construction workers, flaggers and the garments flaggers wear to Part 6 of the Manual on Uniform Traffic Control Devices. The Federal Highway Administration published the 11th edition on December 19, 2023 and gave states until January 18, 2026 to adopt it or keep a state version in substantial conformance. Minnesota now lists its own 11th edition, and San Diego's permit bulletin names the 2026 California manual, so a packet has to carry whichever title the permit actually names.

On federal-aid work, the plan and the pay item share a section. Under 23 CFR 630.1012, a project's plans, specifications and estimates carry a transportation management plan or provisions for the contractor to develop one. The temporary traffic control part may point to the manual or to standard plans, or be designed for that project. The same section asks for pay item provisions to carry the plan out and has the state and the contractor each name a trained person. Your designer and your billing desk are reading one contract from opposite ends.

A city's permit has its own shorthand. Charlotte's transportation department covers temporary use of the right-of-way for more than five minutes and less than 30 days. Applicants name the diagrams they will follow from its Work Area Traffic Control Handbook, known as WATCH. The department reviews and issues permits 72 hours from first contact, wants a full street closure request at least 10 days ahead, and refuses closures during weekday morning and afternoon congestion. A permit you closed last spring shows how your designer answered questions like those, so it is a complete test on its own.

People carry end dates too. Washington requires a flagger card that expires no more than three years after issue, and accepts cards from reciprocity states such as Oregon, Idaho and Montana. The American Traffic Safety Services Association certifies traffic control technicians, supervisors and design specialists for up to four years and says flagger standards vary by state. Minnesota's supervisor certification runs five years. Wyoming's runs four, counted from the dates on the association's paperwork behind it. Any ticket naming a flagger leans on one of those dates.

One arrow board can be sold by the hour, the day or the month. North Carolina DOT's 2018 division-wide contract for work zone traffic control as needed took prices on arrow panels, message signs, attenuators and flaggers by the day and again by the hour, with signs by the square foot and barricades by the linear foot. Texas measures its barricades, signs and traffic handling item by the month, pays attenuators and portable message signs under separate items, and counts law enforcement by the hour per person. A private contractor's rate sheet can differ from both, which is why the billing check starts from each customer's own schedule.

One limit covers both jobs. The proof of concept never touches your dispatch or billing system, a permit portal, a live plan or a live invoice. It never designs a traffic control plan, decides that a closure is allowed or changes an invoice. A certified designer signs every plan, and a person in billing resolves every difference. The rules named here vary by agency and change over time, and nothing on this page is legal or engineering advice.