If this week's You ask, they answer guest has its way, our streets will be greener, cleaner and a lot quieter in the future. Joining us in the comments from Monday to Friday is the Campaign for Better Transport (CBT), which is battling for lower bus fares, less traffic and a huge reduction in the government's road-building programme.
Whatever you want to ask the campaign organisation formerly known as Transport 2000, this is your chance. Want to know its stance on the government's track record on sustainable transport? How it can help you campaign locally on issues such as "cyclability" and car dependency? Or are you interested in its stand on aviation, from expansion to taxation?
Post your questions on green transport below, and CBT will do its best to answer.
