I have a collection of Traffic Regulation Orders relating to Cambridge, which I've acquired while trying to work out what the rules actually are where the signs get vague.
The following orders are “as amended” HTML versions that try to present the current state of the law. They use CSS trickery to implement the effect of amendments and make it possible, with some browsers at least, to see the effect of each amendment. They are currently updated to 1st January 2012.
The map on the right shows roughly the area covered by some of the “Area” orders. The map doesn't tell the whole story, since some sections of road are covered by more than one order. The other orders cover small areas that should be obvious from their titles.
Parking in Cambridge is regulated by The City of Cambridge (Civil Enforcement Area) (Waiting Restrictions And Street Parking Places) Order 2008. This order consists of some text and lots of plans. The plans are based on Ordnance Survey mapping and hence aren't available here. The current text comes entirely from The City of Cambridge (Civil Enforcement Area) (Waiting Restrictions and Street Parking Places) Order 2008 (Amendment No. 37) Order 2011.
Traffic in various of Cambridge's parks is governed by a 1928 bylaw, but the City Council have told me that it doesn't apply to public footpaths across the parks.
There is a list of original orders from which I compiled the above.
Other legislation that's relevant:
The code and data making up these pages are held in Bazaar. You can get your own copy by running
bzr branch http://bjh21.me.uk/traffic/
I claim no copyright in this page or any of the amended orders on it. Copyright in them is probably owned by Cambridge City Council and Cambridgeshire County Council. Copyright in the map is owned by its various contributors.