Quote Originally Posted by bobh View Post
If Ducky has his way, every car will need a man (or woman, mustn't be sexist) walking in front waving a warning flag.

My thoughts-
20MPH is bonkers on arterial roads, fine in housing estates.
You burn less fuel at 20 than at 30 - BUT it takes longer to get from A to B, so you burn more per journey - hence more pollution.
there is less pollution per journey at 20 compared to 30