The U.S. Supreme Court Nov. 5 ruled in favor of Yellow Freight System, which argued that Michigan overcharged truckers who use state roads, AP reported.
Without dissent, justices sided with Yellow, which contested the $10 fees the state required it to pay for registering vehicles that have Illinois license plates. Michigan could have to repay $425,000 and stop charging the truck fees.
Had Michigan won, other states could have raised registration fees for all trucking companies, Justice Sandra Day O'Connor said in the ruling.
Ari Adler, spokesman for the Michigan Department of Transportation, said the state Solicitor General's Office would ask the Michigan Supreme Court to review the ruling.
At issue was the court's interpretation of a federal law that bans states from charging higher fees than they did in 1991. That year Congress passed the law that said states could not raise truck registration fees "collected or charged" as of Nov. 15, 1991.
Michigan changed its method for accessing 1992 registration fees; the court said that was what Congress opposed.
States are allowed to charge up to $10 for every truck that passes through their borders. Many states waive fees for trucks registered in another state if that other state does the same.