What driving concept you feel that most drivers don't understand?
I’ll start. Stopping distance.
My commute is 95 miles one way to work, so I see a lot of the highway, in the rural part of the US. This means traveling at 70+ mph (112km/h) for almost the entirety of the drive. The amount of other drivers on the road who follow behind someone else with less than a car’s length in front of them because they want to go 20+ over the speed limit is ridiculous. The only time you ever follow someone that close is if you have complete and absolute trust in them, and also understand that it may not even be enough.
For a daily drive, you likely need 2-3 car lengths between you at minimum depending on your speed to accurately avoid hitting the brakes. This doesn’t even take into account the lack of understanding of engine braking…
What concepts do you all think of when it comes to driving that you feel are not well understood by the public at large?
Deliberately riding in someone's blind-spot for gods know how long is not only unsafe, it's also fucking obnoxious. It might not be legally your "fault" if you do this and get sideswiped for it, but you brought it on yourself. Doubly so if the person you're pacing has had their signal on the entire time and all you're doing is blocking them from changing lanes.
It’s why I changed my mirror setup. I cannot see my car unless I lean in the right or left mirrors, I use the rear view for what’s behind me. Then, when something is close to disappearing in my rear view to the left, it appears in my side mirror, then when it disappears from my side mirror, I have blind spot mirrors on the corners to transition there, then when it disappears from that, it is in my peripheral vision, so I may see the front of a car directly and their tail end in my blind spot mirror. Works wonders