A BUS driver ripped the roof off his double-decker after smashing it into a low level bridge.

It was the fourth time a bus has had its roof torn off after trying to pass under the 13ft bridge in Gateshead.

Despite flashing electronic warning signals to help drivers safely under, a Go North East bus hit the bridge at 4.45pm on Tuesday.

The accident caused huge tailbacks for frustrated shoppers and rush-hour commuters.

No passengers were on board at the time and the driver was shocked but not injured in the crash.

The double-decker was released about an hour later from the restricted height bridge, beneath the Newcastle to Carlisle line, and the road was re-opened at 6.10pm.

Trains ran at 5mph while officials from Network Rail were called to the scene and examined the bridge.

Engineers said the bridge, which is a recognised accident blackspot, suffered only minor damage.

Electronic signals have been put in after a spate of similar accidents in previous years.

A radar lights up when a vehicle passes but it is not known why this did not work.

Gateshead councillor and member for transport David Bollands yesterday demanded to know why buses were still hitting the bridge.

He said: "I will be asking officers this morning if the sensors are still there," he said.