asked the Secretary of State for the Home Department, if he is satisfied that the regulations governing-chemical tankers containing highly dangerous loads are being enforced; and if he will make a statement.

My right hon. and learned Friend has no reason for supposing that the regulations governing the conveyance by road of petroleum spirit and carbon disulphide, made under the Petroleum (Consolidation) Act, 1928, are not properly enforced. His Standing Advisory Committee on Dangerous Substances is at present considering the possibility of extending the regulations to a much wider range of dangerous substances. Road tank wagons carrying dangerous substances are subject, in common with all other vehicles, to the general law relating to the construction and use of motor vehicles.