State transportation officials should study dedicated travel lanes for vans, carpools and buses on a congested seven-mile stretch of the Capital Beltway that includes the American Legion Bridge, Montgomery and Fairfax leaders urged Tuesday. HOT lanes for toll payers and high-occupancy vehicles are planned for the Beltway in Virginia from the Springfield Interchange to just north of the Dulles Toll Road, and set to open later this year. But Montgomery County Council President Roger Berliner and Fairfax Board of Supervisors Chair Sharon Bulova pointed out a seven-mile gap in dedicated high-occupancy travel lanes between the northern terminus of the planned...