I learn from the Dorset Echo website today that the much awaited Weymouth relief road is un der threat by various environmental lobbies. One point that I would like to make, and one that is rarely mentioned : If there is a traffic jam the vehicles within it are travelling at something like 10 mpg ( many cars have an option to display mpg - usually on the audio console - check it for yourself). Therefore the polution at these times is THE SAME as a constantly moving stream of vehicles with an mpg of 10. So the polution on a congested road is the same as a constantly moving stream of HGVs or drag racers! How come we never hear of "environmentalists" calling for a bypass in order to dramatically improve the average mpg of vehicles on the roads? Why are the environmental benefits rarely acknowledged by these groups?