There's a paper on the ATSB web site here PDF 729kb It's called Intelligent Transport Systems to Support Police Enforcement of Road Safety Laws There's some very interesting stuff from focus groups held with a group of cops that is that seems to have slipped through. Here's a few samples.... I wonder if this applies during the day as well... Implications here for motorcycles with their lights on. Would be interesting to know if they read high or low. Unlikely that many motorcyclists... Unlikely that any motorcyclists would fit one voluntarily. Something that anyone who's ever owned a dog knows about. Deferred punishment is a weak deterrent. Speed cameras are a weaker deterrent than on the spot fines by a real live cop.