After years of commuting in London by bike, I'm pretty sure I understand how to ride in heavy traffic. But why would you want to put your life at risk by riding on such a fast busy A road as those on the thread. then it's your choice. But believe after 30 years of cycling it sure scares the f*ck out of me. But then again, after you've been taken out by a car and one wakes up in Ealing Hospital to the little concerned faces of your small children, wondering what's wrong with their Dad, it alters your outlook on your how vulnerable we really are.