Clutch in, bike in first, and an exit plan. Never stop in the middle of the lane behind a car, your brake light looks like the rear of the car in front of you. I use a Back Off tail light on both bikes, it flashes 3 times and then is solid for 3 to 5 seconds and then flashes again. Also have LEDs, there brighter. You might thank God, but it is your reaction time that is going to save you. I have had three good friends rearended because of no exit plan, no fatalities, but none turned out to good.
I forgot to add that I took a driver improvement course, in the cage. They stated according to a federal study the 7 out of 10 drivers on the road are impaired. So drive like you are invisable and always, always, always have an exit plan!