CHICAGO --- Illinois Gov. Pat Quinn has signed a new law that increases the speed limit for large trucks on major highways in Illinois outside the six-county Chicago area.

Signed into law Friday, the speed limit increase to 65 mph applies to trucks carrying a gross weight of 8,001 pounds or more on interstates and other highways with at least four lanes and dividing medians. But within Cook, DuPage, Kane, Lake, McHenry and Will counties, the speed limit for such trucks will be 55 mph, the Associated Press reported.

The speed limit for trucks carrying a gross weight of 8,000 pounds or less will also be 65 mph. This speed limit also applies on the Illinois State Tollway system outside urban areas.