I tap my brakes a couple times to effectively ''flash'' the brake lights prior to a major slow down.
( On the way to my daughter's school each morning there's a stupid island at the left turn, fitting merely four vehicles safely in the turning lane. At this time of day there are dozens of vehicles needing to turn here ! Approaching this intersection I carefully take notice faaar ahead if the turning lane is filling up to leave many of us in the driving lane. THIS is where I flash my brake lights for the 45mph traffic behind, because the driving lane may be at a standstill untill the next light cycle. ) ( also, this town is ten miles long with a universal middle turning/accel lane the entire length of town....except for about six of these stupid islands ! )
But defensive stopping takes a diligent attention. Essentially pre-planning and predicting every move.
-- Turn signal FIRST........then slow down, changing lanes prior to slowing if there's a turning lane.
Otherwise it's an odd circumstance of bad luck to have had so many.
But there's a few things I've noticed some drivers do that are just asking for rear-enders.
Don't NOT go when other drivers would naturally assume you should.
Don't slam to a screeching halt at the first split second of a yellow IF you're being followed by anyone who fully expects you'll finish the move.
Go when it's your turn, and everyone around you knows it is.