Penguin68 Wrote: ------------------------------------------------------- > At the moment the ultra-low emission zone is > already 'policed' by congestion charge cameras - > hence there is virtually no additional > infrastructure cost in implementing it (some more > coding for the camera software, and running it > 24-7 and not just during congestion charge times). > To extend it as wide as is planned will require > many, many more cameras to spy on every route that > crosses into the new zone, together I assume with > data runs to identify qualifying vehicles which > are registered within the zone (although of course > they could well, on the peripheries, be kept > outside the zone). All told the costs of > implementing and running such a scheme will be > huge. This is much more complex than road tolling > (where you choose carefully the limited routes you > will be charging on). Just think of the number of > suburban roads that lead into, particularly, the > South Circular (which, unlike the North Circular, > which is real, is just a mapping convention). All > will need to be covered by cameras and cabling to > those cameras. Indeed. The vast cost of implementing it, with the backdrop of Brexit and Carillion, would mean that the whole project would have to rely on residents NOT renewing their 'polluting' cars and instead paying the fees and fines to fund it and then on, to pay for its upkeep.