It would be great if the Chamber was as enthusiastic about decreasing rail or bus fares as they appear to be about decreasing tolls on roads. I think, before we rush into insisting that this is a universally good idea, I would like a bit more of a precautionary approach and understanding of what level of increase in traffic this might generate, because the implications for my constituents are that they are already, in some parts, suffering unacceptable levels of air pollution, and any increase would most definitely not be welcome. So, I wondered what analysis the Government has done of the impact of increasing traffic as a result of either reducing or eliminating the Severn bridge toll.