[dunnere]

ok tom you got some partially right. You got 4 of the 7 :restrictor plates,roof flaps,window nets, seats. The HANS device with dale sr. The safer barrier is correct but to clearify the driver (s) were involved in crashes and mandated after there death (s). By the way you guys really know ur nascar.

Been doing a lot of NASCAR research lately...this thread has really helped me learn and remember things...

Ok, so as far as this question goes:

HANS device is mandatory following the Dale Earnahardt crash.
So are full face helmets.
So are six point harnesses, also include Adam Petty, Kenny Irwin, and Tony Roper deaths in with Earnhardt on those.

Fireproof suits and shoes and under garments.

Molded seats.

Restrictor plates.

Window nets, following a Richard Petty crash where his head and arm came out of the car.

Roof flaps were designed by Penske after a Rusty Wallace flip. I think Roush helped with the final design.

Car of tomorrow was developed following a couple of driver deaths, perhaps the same ones associated with the harness?

Pit road speed restrictions, following the death of a Melling Racing rear tire changer.

Spotters, whenever a car is on the track.

Barriers, specifically SAFER barriers, which sprung from earlier attempts at softer walls, mostly from IRL racing, and then continued when Arie Luyendyk hit a PEDS barrier in an IROC race and spun onto to the track, destroying the barrier, which saved him, but didn't really keep the car out of oncoming traffic.

So, that's what I found when I went looking...not sure if everything is right, or if I answered the question as you posed it...