A complete trip between the two end terminals, Gangcheng Road and Oriental Sports Center takes approximately 1 hour and 10 minutes.

Like the Lexington Avenue Subway in New York City, passenger traffic has consistently exceeded the designed capacity of the line since its opening and causes severe strain to the services.

[3] Realizing the sheer miscalculation during construction, the municipal government pledged to add new trains and shorten wait times starting in June 2008.

However, Line 6 still suffers severe crowding and delays especially during rush hours with passenger flow growing faster than expected.

This difference in loading gauge has made it impractical to upgrade the line to higher capacity "A size" trains to relieve demand.