Cycling crashes are extremely typical in the UK with numbers from the Royal Culture for the Prevention of Accidents (ROSPA) showing just over 17,000 bicyclists were killed or harmed in the UK in 2010 alone. Additionally, as a biker: understand pedestrians. This is aimed straight at motorists, and to bus and HGV motorists in particular. In London HGVs cause a high proportion of severe cycling crashes. If you are involved in an accident, very first points initially, I hope you are wearing a headgear. Helmets are essential.
