CHEYENNE, Wyo. (AP) — Law enforcement officials are concerned about a proposal to allow Wyoming drivers to exceed the speed limit when passing vehicles on two-lane highways.

House Bill 21 would let drivers go up to 10 mph over the speed limit if the vehicle they're passing is going slower than the limit. They could only pass one vehicle at a time.

The head of the Wyoming Peace Officers Association, Sam Powell, told a Senate committee Wednesday that drivers might not know about the finer points of the bill.

The interim director of the Wyoming Highway Patrol, Lt. Col. John Butler, said troopers already have discretion in whether to ticket drivers who speed up to pass someone.

The Wyoming Tribune Eagle (http://bit.ly/zHlt4j ) reported that the committee passed the bill, sending it on to the full Senate.