At terminal stations trains reverse direction in the platforms, except at Bank where there is a reversing headshunt in the tunnel beyond the station. Many peak-hour trains on the Lewisham route from Stratford turn back at Canary Wharf. During service disruption or planned engineering work, trains can also turn back at and . Trains serve every station on the route, but trains from Bank to Lewisham do not call at West India Quay because they are routed along the diveunder track to avoid junction conflicts. During long-term works for extension projects, other routes may be operated at weekends, such as Beckton to Lewisham if the Bank branch is closed.