I was driving at night in the California desert, perfectly straight two-lane road, going about 90, and there was a truck on the same road, going the same way, doing about 30, painted black, without a single reflector or rear-facing light.
I jerked the wheel just in time to avoid a collision and managed to keep control, but it was a near thing.
More accidents these days by folks falling asleep at the wheel, or texting and drifting over onto the soft sand shoulder.
I try to slalom the Bott’s Dots on the dashed lines to keep awake, so as not to hit them, but passengers hate me for it.