I wear a Road ID bracelet engraved with my insurance provider, member number, and two emergency contacts---one near my home and one in the Shenandoah Valley where I frequently ride. I don't always remember to put it on when I go out, so I also have a copy of my insurance card tucked into my underseat bag.

I had an extra line on the engraved tag on the bracelet so I also included my pick-up truck license number, for what's it worth. I often drive to wherever I'm riding in the country and figured it wouldn't hurt to include it. If I'm seriously hurt, my truck is going to be stuck wherever I parked it. By including the info on the bracelet, the police can be tipped off that it's not an abandoned vehicle. :-)