I pulled out behind an ambulance(no emergency lights running,) there was not a car close behind it . I go a mile and a half up the road signal to turn left (waiting for on coming traffic to pass . Wham, a few minutes later I realize I am in the middle of the road on the ground and with all of the on coming traffic is parked in the ditches . Seams that a poor little old lady had fallen behind the ambulance far enough so that I could safely enter the road between them. Her husband was in the ambulance and she was not thinking about driving until she slammed into the back of me at about 30mph. Luckyfor me, the on coming traffic was actually driving and managed to keep from making me road kill. I do not recommend riding behind a ambulance even when the lights are not on because you never know if there will be a emotional distressed person following behind. I survived, and my wife gave the little old lady a ride to the hospital (her husband survived) and I rode with the tow truck to take my bike to the shop. So please use caution; I never thought about the vehicles or drivers that travel behind ambulances but never again will I make the mistake of placing myself between a rescue vehicle and inattentive driver again. I hope. i always try to makes sure if I get hit I am not pinched between vehicle so I was far left in the lane since I was turning left. I need to rethink this . I could have easily been hit by the oncoming traffic had they not been alert. So other than avoiding ems vehicles how could I imrpove my odds. By the way I was less than 2 miles from home turning into the store. Always wear your gear even if it is a quick run to the store.