Another problem on Metro's busy line. Trains are sharing a track between Friendship Heights and Van Ness.
The National Highway Traffic Safety Administration says that an additional three million vehicles may have defective airbags.
Earlier crash causes four mile delays on Beltway
Crews will close part of Canal Road in NW D.C. to fix the heavily-traveled road. The road will be closed in non-peak hours.
Delays are due to an earlier train malfunction. Impact is on three rail lines.