Line 4 malfunction worsens peak week

Beijing's annual peak week for road congestion got even worse on Monday when a major subway line suffered a malfunction during morning rush hour.

Services on Line 4 experienced delays from 7 to 9 am due to signal problems, operator Beijing MTR Corp said.

The interval between trains on the line and its extension, the Daxing Line, were extended and many passengers were stranded in stations.