Besides the cost and tagging etc. The thing that Pi$$es me off the most is the exemption of Taxis! They are the ones that damage and use the roads the most.. I will not be able to stay calm when a taxi shoots past me smiling, with a bumper sticker saying "Thank you for the Great Roads".
Taxis and buses are also the only ones who use the road for commercial gain. They should pay more than normal road users.