Although with a bias toward cycling - this (lengthy but informative) article explains the law (I'm most people who have contributed to this thread will feel vindicated for their arguements in some way): http://www.bikehub.co.uk/featured-articl...d-the-law/ This article gives an example how it is often poorly enforced: http://www.bikebiz.com/news/read/dear-po...reet-legal