Incidentally they did try cracking down on ASL infringement in Edinburgh last year.
Police ran a four day crackdown on motorists in ASLs and cyclists (though not motorists) jumping red lights.
In that time they warned 106 motorists for ASLs, 26 cyclists for RLJing, and another 6 cyclists for pavement riding.
That seems pretty fair to me.
http://road.cc/content/news/58059-edinburgh-police-warn-more-100-motorists-encoroaching-advanced-stop-lines
The breakdown of the ASL infringers was interesting too:
“53 private car drivers were warned for stopping in ASLs, plus drivers of 34 black cabs, 15 public service vehicles including coaches, and four buses. Some 85 per cent of motorists stopped were male.”
(Naturally the comments in The Scotsman complained about cyclists always breaking the rules..)