Here is what i consider a sound piece of advice, not just for cyclists ( which i am very, very new at), but for anyone walking upon the face of the earth. First of all...learn to defend yourself. It is not difficult as most people have little to no formal training and if you were to acquire some, having a thug beat you up and steal your stuff would be a non issue. Secondly, the reason I decided to carry a frame pump, even though I have the CO2 pump, is that it is a quick and handy weapon, if you were to require it. I do not advocate violence, however, the need for self preservation tops all and you must do what you must. You will not always be able to out run the "bad guys". The world is a violent place...trust me..I am a Soldier, a nurse, and a Drill Sergeant, I have seen a lot of it. Road Bikes and your gear cost a bunch o money, no need to lose it to an idiot who doesn't even know what to do with it.