Road ID is a must. I have the bracelet version. I keep it on my helmet so when that goes on so does the bracelet. I also wear it running, just in case that rogue car veers off the road and wipes me out. (These things happen to me, trust me). We have had some spectacular bike vs car accidents down here and I know that any rescue guy will be thrilled to know if you have any medical issues by a bracelet and who you are, etc.