The 1982 F-150 had around 200 horsepower, depending on the configuration. If you believe the majority of people are driving between 1,000 to 2,000 hp cars today you are badly mistaken. An Abrams tank has around 1,500 hp but not too many of my neighbors drive those to work.
https://itstillruns.com/1982-ford-f150-specifications-759817...
You could also get pickups with 52 horsepower in 1982 as well:
http://vwtruckforsale.com/wp-content/uploads/2014/05/specs-s...
A 2021 Ram TRX has 13.5 times that amount of power. (702hp)
The smallest pickups you can get in the US today, the Maverick and the Santa Cruz both start at 3.7 times that amount of power (191hp).
I think a combination of increased vehicle size and number of vehicles per capita probably explains why parents would feel less comfortable having their children walk down country roads to school.
[0]: https://www.iihs.org/news/detail/new-study-suggests-todays-s...