This may sound overly simplistic but I learned the hard way (almost hit 3 times) in 6 month period. I now have slowed down in heavy traffic area's and ride at speeds a cyclist would go. Or another way of putting it don't go faster than your braking ability can handle. I recently put a larger headlight on the bike to make it appear I'm riding a small motorcycle, and I believe it has helped some. The young guys are really bad drivers around here.