Shops are open until 9pm 3 days of the week and all day Sunday too.
Regardless though, I accept that at certain times. However, I don't think shoppers will think it out in that way. I think they'll just make a swooping decision.
City centre drivers now have to concentrate on driving in a built up area, pedestrians, half-wise cyclists, buses pulling in, out and swooping across lanes, being caught in a bus lane by a camera (when often hard to avoid), taxis thinking they own the road (particularly black taxis and I'm not branding all black taxi drivers as this btw) and now constantly looking at their speedometer to ensure they don't get caught creeping over 20mph?
To many this is simply 'not worth the hassle'. I have no doubt traders will feel this.
No offense but maintaining a steady 20 mph isn't difficult and cant see this affecting the traders