One possible solution to reduce air pollution in cities could be to bring the speed limit right down to 20mph inside cities and areas where there are extremely high levels of traffic congestion, ....or even as low as 15mph in some tight areas.......and get rid of traffic lights and pedestrian crossings.
Take a leaf out of experiences gained from schemes being used in Holland.
Once the country has an infrastructure to be able to charge all our vehicles and a safe and environmental way of processing wasted batteries then it might be time to take the internal combustion engine off the city streets.
Reducing speed limits increases congestion in peak periods. It is very simple you just have to do the maths. Reducing traffic lights, toll gates, pedestrian crossings etc does reduce congestion and therefore increases flow to get the vehicles off the road in the shortest possible time.
The advent of the car as a consumer product has led to people working far from home and in places difficult for a commute by public transport. It is a fact that some places now have little or no public transport because of the lack of demand.
What is needed is for people to return to working and living in short distances and a return to public transport. Private vehicles could be banned from city areas. Milan has gone part of the way by banning old polluting private vehicles from the city centre.
All very wonderful but I don't see much change happening in the near future.
My next car will most likely be a Euro VI diesel
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