ALL additional road taxes and charges on road users, such as tolls and above-inflation fuel duties, must be ring-fenced for additional transport investment to support both transport and environmental objectives, according to the Society of Motor Manufacturers and Traders' submission on the Government's integrated transport policy plan.

Moves to tackle vehicle emissions, congestion and car usage have all been detailed in the SMMT response, which has been compiled following discussions among car, commercial vehicle and component manufacturers.

The SMMT says only cars and commercial vehicles can satisfy public demand for personal mobility and business demand for the free movement of goods and services for the vast majority of journeys. But, it says, there are viable public transport choices and a voluntary reduction of vehicle usage is both 'desirable and achievable' and would significantly limit traffic growth.