Exhaust Emissions Mr. Andrew Welsh To ask the Secretary of State for Scotland what powers he has to enforce stricter emission standards for car exhausts; and whether he intends to use them. Lord James Douglas-Hamilton The enforcement of emission standards is a matter for my right hon. Friend the Secretary of State for Transport. Plans for reductions of emissions are contained in the written answer given by my hon. Friend the Under-Secretary of State for Transport on 8 June 1990, at column 722.