Uncle is exactly right. Maintaining a coushin all around you is extremely important. Tailgaters make it real hard. I slow down and prepare to stop real early so I have room in front to move into should I feel a rear ender coming up from behind.
While driving, I will even pull over and wave a rear tail gater by.
If all else fails, I first put my flashers on…as a last resort, I put the right blinker on. Cars generally slow down from behind when the think you will turn and leave you a coushin cause they think you are crazy if you don’t.