Prince George’s and Charles county officials want a light rail project connecting the two counties to be one of Maryland’s top transportation priorities, but the project may have trouble gaining the state’s attention and dollars. An 18.8-mile light rail line along the Route 5 corridor in Southern Maryland would extend rail transportation from the Branch Avenue Metro station to Waldorf and White Plains. Councilman Mel Franklin, D-Upper Marlboro, plans to introduce a resolution pushing the state to prioritize the project.