As far as I can make out Oxford’s ZEZ consists of streets which are pedestrianised! The only vehicles which use them are the emergency services, and delivery and service lorries. Oh, and buses in Queen Street- possibly the oddest “pedestrianisation” effort ever! If the City Council had any balls they’d include The High, St. Aldates, St. Giles, Beaumont Street, Worcester Street, Hythe Bridge Street, Park End Street, New Road and Castle Street. Turn the Worcester Street car park, the far end of St. Giles and The Plain into electric tram termini and **** the buses off completely.Cities are already legislating them out. Oxford starts its zero emission zone this year.