Since your concern is getting aproval from your mother, I won't go into how discourteous cyclist reduce the safety of all cyclists. I've been riding a very long time (since about 1959), but I'm not a mileage junkie, so there are probably others on this forum tha have riden a lot more miles than me, Still, you'd have to say I'm pretty experienced. Road cycling is dangerous, but the danger can be greatly reduced by defensive riding, paying attention and not being foolhardy. I've never been hit by a vehicle, but I have gone done several times, and have had a number of close calls. The times I've gone down, I took the lip of a driveway at too shallow an angle, I hit a rock in the road, I hit a patch of ice, and I hit a hole in the road. Pretty much all of these could have been prevented by being more attentive. Here's how I've avoided being killed. I assume that that guy turning left doesn't see me. I assume that guying waiting to pull out doesn't see me. I don't ride on busy roads with no shoulder. I watch my rear view mirror and if a wide load is coming up behind me, I'll pull into the next driveway or sideroad. I never forget that I'm always going to lose any contest with a car or truck. I yield when I'm not obligated to. I'm not willing to die rather than give up my right of way. And I don't come down Flagstaff Mountain faster than my skill permits. I know my limitations. A man's gots to know his limitations.