re: rear end collisions....I drive a scooter (Yamaha FJR), and have ridden some form of cycle off and on since I was 14... In the old days, I got into a bad habit of putting the bike in neutral at a stop light to save wear and tear on the clutch throw out bearing, and reduce stretch of the clutch cable... today I leave it in first, and have my eyes fixed on the rear view mirror, until I'm sure the car behind me is going to stop..