Proposals to extend rush-hour periods and institute a $2 flat fare for weekends failed to make the cut.
The meeting last fall followed the crash of a Boeing 737 Max 8 operated by Indonesia’s Lion Air.
Air safety experts say grounding the Boeing plane wouldn’t be justified without a clear and specific equipment or safety problem to pin it on.
A crash that killed 157 people on Sunday was the second incident in recent months involving a Boeing 737 MAX 8. A Lion Air flight using the same model went down in Indonesia in October.
Agency officials and board members show little urgency to address the decline.
The NTSB and FAA are among the agencies involved because the plane was made by Boeing, a U.S. manufacturer.
By 2040, experts say, the driverless revolution could usher in a more cohesive region — or simply a more congested one.
Metro’s public positions were a sign that the agency intends to maintain early weekend closings for as long as possible.
Metro board chairman Jack Evans, who had initially said the District would veto such a move, said the final vote reflected the realities facing the system.
The Gulfstream jet apparently blew out two tires as it took off from New Jersey's Teterboro Airport.