Can they not take their tools to a job during the delivery time, surely just a matter of organisation., or possibly give exemption permits but be very selective on who and how many.
When a new ground was suggested on the Shoreham Power Station site an underground system for access was suggested IIRC it was estimated the cost would be about £80m per mile so the cost of a city underground system would be prohibitive.better off providing some bike stands for attaching bikes...
Would it not be cheaper to re instate the tram system that was about in the 50s but obviously updated.Perhaps they could look at 1 sq mile car exclusion zone from the old clocktower cross roads except taxis any time and delivery vehicles at certain specified times ie 8pm -8am.