I’m reminded of things that I learned / were enforced upon me. I took driver’s ed in my high school, and took private lessons for about a month before taking my driver’s test.
From my private lessons, I remember the instructor telling me that when you’re not sure if another driver is slowing down or not, to look at their wheels and try to gauge whether the rotations are slowing down or not.
Another thing was I was stopped at a red light one time, and she had me look ahead and assess what I saw. What I didn’t point out was the person loading the trunk of their car that was parked on the street. Her point being that when I pass that guy, that he might not see me coming and I have to be ready for him to perhaps step out into the road. Do this with TSA once in a while, make sure he sees some potential danger/accident that you do.
For AFTER tsa gets his license - Enforce a different curfew time. I got my license in my senior year, when my curfew was normally about 1:30. For the first month or two after I got my license, my curfew was raised to 12 because my parents didn’t want to chance me driving tired. After a little bit it became 12:30, and so on until it was back to normal time.