For me this is no longer simply just about residents being unable to park near their homes, or not being able to use their cars during the day as they won't find a space on return. Close to ED station we are suffering the cost of others having the convenience (or perceived convenience) of being able to park here. If all parking spaces are full we regularly have grid-locked congested streets as cars simply can't get past - aggressive drivers, honking horns, unnecessary air pollution with cars idling, damage to cars are all adding to the toll. Cars regularly circle the roads trying to find a space, and this situation will only get worse when the new school and medical centre open up with minimal parking spaces. If people think there's a chance they might get a space then there's a likelihood they'll drive and spend time trying to find one. With a CPZ we stop being a destination to park in and hopefully it starts to drive alternative ways of getting around.