The following sequence of pictures was taken from the viewpoint of a saloon car driver exiting right from Bell Square onto Bolton Road. (Look out for the Landrover and the blue car circled in yellow)

The blind spot does not exist if the driving position is higher eg a 4 x 4.

Further back from the junction, traffic can be seen through the gap in the wall but at the point, the pictures are taken the gap is not visible and oncoming cars disappear.

Turning right from Bell Square, as drivers approach the GIVE WAY line they tend to look left to see if there is a gap in the traffic coming down Bolton Road. Seeing a gap, and believing the road to be clear from the right they pull out and BANG!