asked the Minister of Transport if he is aware of the continued obstruction and congestion caused by cars parked on both sides of the street in central London; and if he will arrange for an extension of the system of unilateral parking so as to facilitate the flow of traffic.

I am aware of the difficulties to which my hon. and gallant Friend refers, and I am considering whether I should authorise unilateral waiting in the first place experimentally in certain selected streets in the inner and outer areas of London.