Title 49 › SUBTITLE III — GENERAL AND INTERMODAL PROGRAMS › CHAPTER 51 — TRANSPORTATION OF HAZARDOUS MATERIAL › § 5112
States and Indian tribes may set and enforce specific highway routes and rules for motor vehicles that carry hazardous materials and must display placards. The U.S. Secretary of Transportation will write rules that say how states and tribes must do this. Those rules must make sure route choices improve safety, allow public input, involve nearby jurisdictions and affected businesses, keep routes continuous between areas, and do not unfairly block commerce. The rules must be made quickly, give trucks reasonable access to terminals, fuel, food, repairs, rest, and loading areas, and require states to make sure local governments follow the rules and settle local disputes. States and tribes must consider things like population, road types, types and amounts of materials, emergency response, risks, terrain, alternate routes, effects on commerce, and delays. The Secretary may not tell states how much weight to give each factor. The Secretary will keep and update a list of current hazardous-material route designations. Each state must tell the Secretary which state agency is in charge and send its list of routes at least once every 2 years and within 60 days after any route is added, changed, or removed. The Secretary will also make rules to resolve routing disputes between states, tribes, or local governments. A party can ask the Secretary to decide, and the Secretary must decide within one year. The Secretary’s decision must give the highest level of highway safety without creating an unreasonable burden on commerce. After a petition, a court case may only start after the Secretary decides or after one year, and a party unhappy with the Secretary’s final decision has 89 days to ask a federal court to review it. Existing radioactive-material routing rules that were in effect on November 16, 1990, need not be rewritten.
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Transportation, Source: USLM XML via OLRC
Legislative History
Reference
Citation
49 U.S.C. § 5112
Title 49, Transportation
Last Updated
Sep 22, 2026
Release point: 119-110