asked the Minister of Transport whether the recent experiment with yellow box crossings has resulted in speeding the flow of traffic in the West End of London.

Preliminary reports indicate that the boxes have been helpful, with best results at the busier junctions.

My right hon. Friend announced on 29th June that he had proposed to the local authorities concerned an extension of the experiment to 16 other junctions in London. Observations at these junctions will augment the information being obtained about the first six.

Would it be possible, by rewriting the Highway Code, to make this the general procedure at crossings?

Before doing that we must see whether these experiments turn out to be as successful as they look like being.

Can my hon. Friend say how many prosecutions there have been since this experiment was inaugurated?

I regret that I cannot give those figures without notice.