HC Deb 24 July 1963 vol 681 c177W
63. Mr. Wainwright

asked the Minister of Transport what his estimate is of what it would cost to change over to driving on the right-hand side of the road.

Mr. Marples

The cost of a changeover to driving on the right would vary according to the length of the preparatory period. Our estimates are at present tentative, but they indicate that the cost might be of the order of £200 million with a five year warning period; £100 million with a 10 year period; and £35 million with a 15 year period.