Been hit from behind and that had me jumpy for quite awhile. Route selection has helped. My route is slower and a little longer but I feel it's safer. Fortunately I enjoy riding gravel and I can avoid the narrow busy county roads by riding several miles of gravel. My commute is a rural into a small city so I don't get the same traffic pressure most do but careless drivers abound everywhere. I'm fortunate my employer is flexible so I've shifted my work schedule to arrive by 7am and leave at 3:30 so I miss the heavier traffic times here. Lots of lights, being conspicuous as I can and taking the lane when necessary. When I do and move back over when it's safe I'll wave to the vehicle I've blocked and most have been good about it.