One easy, no-cost fix that will make a safer racing environment for drivers is to refuse to compete at tracks that do not have an ambulance on site. If you see an ambulance at the track do not assume it is properly staffed and equipped. Make sure they have the proper personnel and equipment for:
1. Airway maintenance and breathing assistance
2. Spinal protection and stabilization
3. Cardiopulmonary resuscitation
4. Control of external bleeding
5. Transportation
It amazes me that with so many choices of where to race this doesn't factor more into peoples decisions.