Pollution stalemate?

On the B&NES website is an area dedicated to the  environment and pollution where much is made of the alleged benefits of the proposed BTP.

Interestingly the accompanying questionnaire, which has to be returned by 15 January 2010, lists Windsor Bridge and Newbridge as congestion hot spots! So, installing numerous sets of traffic lights, ensuring that bendy buses come out onto the Windsor Bridge and cross Newbridge Road at its busiest point, and encouraging an extra 500+ cars towards the New Bridge (which is already a pinchpoint and cannot be enlarged as it’s a listed structure) near the P&R is going to help how?