The other thing that I think would help people is riding a bicycle on city streets and learning a different way to pay fucking attention!!
I've said it before, I learned to drive in NJ, traffic circles were everywhere, people knew what the passing lane was for and did not park their slow ass selves in it. At 20 I moved to Seattle but the first weeks were spent on a road trip down the west coast on Hwy 101, I learned to drive a stick shift on those windy curves and got my masters in shiftology on the hills in San Francisco. I've done several road trips across country. The absolute worst drivers I have ever encountered are here in Ellensburg, WA. Four way stops are a nightmare for these people, just clueless.
I digress, you see the road different on a bike. Probably because you are more vulnerable and then when you are back in the car that watchfulness carries over. Though the dumbest thing ever is seeing a person on a bicycle texting.
I'll have to check out an online course.

Good on ya!

Because I worked for a company (Pacific Bell) who self-insured their vehicles, managers who drove them had to take annual Defensive Driving courses. Even though I'm long-time retired...I still remember it all, and I've never caused an accident. There's a lot of value in that practice.