Signs marking the decrease of traffic speed to a maximum of 45 mph are in place along part of Mesa Ridge Parkway on the north ...

The Illinois Department of Transportation said the change was made because crash data showed a "disproportionate" number of accidents.

Watch out, Denver drivers. The speed limit on the recently reopened Eighth Avenue viaduct has been dropped to only 10 mph.

North Dakota will raise the speed limit on its interstate highways to 80 mph on Aug. 1. Fines for speeding are going up too.