Sir - Comments in The Oxford Times about the number of buses in the High Street seem to have focused on the visual impact on a historic street, or, in the case of the Oxford Bus Company, on the use of the road by non-bus traffic.

However, the fact that customers at the Old Bank Hotel asked to be moved from rooms at the front of the hotel suggests that much of the problem is caused by noise.

It would be interesting to have some independent evidence about the noise levels in the area.

The World Health Organisation and the Government PPG 24 both give a daytime outdoor noise limit of 55 dB in residential areas. As far as I know, the noise from even one bus is well above this limit, while the sound of the Oxford Tube can be heard more than 200 yards away.

Barbara Raw, Oxford