Two computer-controlled commuter trains collided at the height of morning rush hour in London's Docklands district Monday, shutting down the railway system and forcing the evacuation of dozens of passengers, police and witnesses said.

One two-car shuttle traveling through the Isle of Dogs from London's Tower Gateway was struck by a second-two car train approaching from the east at a junction on the West India Quay bridge, rocking the first train and throwing it off the track.No serious injuries were reported.