Mitigation Strategies for Four Factors in Preventable American Deaths

Deaths as a function of Guns, Cars, Rage/Depression, and Procedures:
So there's four spheres that interact and result in preventable deaths. We don't have to prevent them all - just preventing a lot of them would have a significant benefit. So how to address the Four Factors {guns, cars, rage, procedures}?

• Address Procedures by:
  • Require training in weapons handling
  • Retesting - both Q-and-A and handling - a portion of guns/cars users every X years.
  • Change the posture from car-culture and gun-culture "accidents" to safety-culture "events", and publish results of event investigations.
  • Conduct public awareness campaigns identifying common themes in gun and car procedural failures.
• Address Rage by:
  • waiting period for gun purchases.
  • background checks for gun owners.
• Address Cars by:
  • reducing speeds by enforcing speed limits
  • Adopting Vision Zero philosophy of: there are no cost-justified car deaths
  • provide public transit as an essential public service.
  • implementing autonomous vehicles
• Address Guns by:
  • CDC gun-violence studies from a public health perspective.
  • reduce easy availability of guns
  • remove access to assault weapons

(I was tempted to simply write Emotions where I ended up placing Rage, but I'm told that I'm not right about the emo-spectrum so I drilled down)