Paulie, I reckon people do well under the limit because of fear of being booked for accidental speeding, such as doing 63 in a 60 zone, or because the speed limits in some built up areas change so much, that they are worried about sitting on 60 and not seeing the speed limit change to 50 and then get pinged for that. These are probably people who have already been booked for very minor speeding offences a couple of times already in the last 12 months, have had a gutful of handing over money for a speeding offence where they were doing roughly crawling pace over the limit, and have come to realise that the system is set up to ping good drivers who keep their eyes on the road rather than just staring constantly at their speedo and ignoring what is happening around them. A busy piece of rural road that I use on the way to work has something like 8 speed limit changes in about 9klm, ranging from 70 to 100kph. Many of the speed changes make no sense, as not a lot changes between zones as far as road conditions are concerned. With everything else that is going on around on the road, it can be easy to miss one of them even though I know roughly where they are. This comes back to my original post in this thread about our speed laws and being scared of the consequences, with almost zero leeway from cameras and your typical highway patrol copper making you feel like a criminal guilty of a much more serious offence if they pull you over. And after all, its not like they hand out warnings anymore.