I caused my own "minor accident" in our driveway while my wife and I were getting ready to go for a short ride on the 650 Yamaha. I wasn't feeling all that well (first sign not to be riding) when I just started to apply throttle and the front wheel went into a small hole at the end of our driveway. At the same time I was turning the wheel left when it turned hard to the left and the bike went over. I rode it to the ground as my wife simply stepped off looking at me while I was laying there on the ground asking...What happened? DUH!!!!! How would she know....she wasn't driving.
I have felt before that when I do not feel well that I should not be riding a bike.....and this was one time that I proved to myself why not. I would say to others that if you are not feeling well or are tired.....and you are going to ride....be very careful and if you have a choice not to ride.....wait until you are well or rested before you do so. It may be the difference of staying in one piece....you and your bike.
On another note....I have read articles....and spoke with others who knew of a rider....or riders who were in an accident while riding in groups. I'm sure there are several reasons for this happening.....but I have to believe that some reasons are due to inexperience of riders who ride with groups and either have not been given pre-ride instructions or they just didn't listen and found themselves in trouble by not paying attention to what the group was doing around them. I have heard of some who were showing off while riding in groups and either caused themselves to be involved in an accident or others who were around them. I'm sure some could tell us other reasons as they probably have witnessed some issues while riding in groups.