§ Mr. AllenTo ask the Secretary of State for Health what assessment he has made of the health hazards presented by those exhaust emissions of vehicles which are capable of being reduced or eliminated by catalytic converters; and if he will make a statement.
§ Mr. FreemanThe effects of the relevant primary pollutants, carbon monoxide, hydrocarbons and oxides of nitrogen, and of secondary pollutants, notably ozone formed by subsequent reactions in the air, have been considered in consultation with United Kingdom experts and through the World Health Organisation. Their assessment is that there is no evidence that current environmental concentrations in the United Kingdom arising from traffic sources present health hazards.