SAO PAULO -- Fuel delivery truckers have ended a three-day strike that emptied many gas stations in South America's biggest city.

A spokesman for the Sao Paulo truck drivers union says drivers started delivering fuel to the city's 2,000 gas stations Wednesday night under police escort.

Claudio Ferreira says the union requested police protection from "nonunion individuals who threatened to damage trucks and attack drivers."

He says service stations are expected to be operating normally within three to seven days.

The strike began Monday to protest the city government's attempt to restrict where big trucks can drive.

On Tuesday a judge ruled that unions would be fined one million reals ($565,000) a day during the duration of the strike.