Congress may provide funding to study whether a high-speed bus service could help relieve congestion on the Interstate 66 corridor.
A spending bill approved in the House on Tuesday includes $500,000 for the study. The bill still needs to win Senate passage.
The rapid bus service would be similar to a rail system. The buses would travel in specific lanes, and passengers would board from a platform.
Virginia Congressman Frank Wolf says it's another way to solve the gridlock on I-66.
The transportation funding bill also includes another $20 million to extend Metrorail to Dulles International Airport. And, it includes $500,000 to expand the Virginia Railway Express.