Do you happen to know where/if the stats have been published? A significant increase in safety would make up for the frustration caused by the cameras, when the road is empty.
Sadly, the introduction of these zones will have no affect on the number of foreign drivers who end up driving on the wrong side of the road!
Jock
TomTom Go 940 LIVE (9.510, Europe v915.5074 on SD & 8.371, WCE v875.3613 on board)