> If you still have lorries and vans and buses then it feels like a lot of the safety and emission arguments fall apart really. Disagree strongly. Special acce

> If you still have lorries and vans and buses then it feels like a lot of the safety and emission arguments fall apart really. Disagree strongly. Special access sharply reduces the number of vehicles, of course, but it also changes the natures of the people driving them. A larger proportion will be professionally-employed drivers and moving through a pedestrian-only area that lacks a defined right of way or traffic devices is going to compel most drivers to move at a creeping pace. Traffic citations are more likely under these circumstances as well. Buses and trams (there's little practical difference when the bus right of way might as well be rails) are unlikely to be operated by aggressive, inattentive, inexperienced, or inebriated drivers, and they're more predictable. On emissions, there are reductions, first because fewer drivers overall, fewer low-occupancy vehicles with no cargo, and then second order effects on car ownership and miles driven for nearby communities.