CASPER, Wyo. (AP) — Two bills headed for introduction in the Legislature this winter would attempt to encourage more use of natural-gas powered vehicles in Wyoming.

One bill would transition up to half of the state's vehicle fleet to run on compressed natural gas by 2017. The other bill amends a state loan program to include incentives for vehicles powered by compressed natural gas.

The Associated Press reports the measures cleared the Joint Minerals, Business and Economic Development Committee in Casper on Tuesday.

Committee members say they hope the bills will help create a stronger market for natural gas for vehicle power.