The building of more and more roads in cities has left congestion at much the same level as before. A dynamic statistical model is necessary. Policy makers need to be persuaded to take a systems view of all modes: improving one mode may not improve the system as a whole.
Topic: 7.1 traffic Policy
Increasing use of cars and decentralisation of activities will continue. The resulting deterioration in public transport causes hardship to those without access to a car, including some members of car-owning households. The author considers some ways of mitigating or slowing down these trends.
As a practical criterion it is suggested that a balance between private and public passenger transport might be planned with the object of minimising the total of all journey times. The data needed to implement such a criterion are described and a hypothetical example is give using data relating to Leicester. The method of diverting passengers from private to public transport is not revealed.