and/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing, vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training. Define and control external and internal radiation environments over the applicable mission lifetime, including trapped particles, solar particle events, galactic cosmic rays, total ionizing dose (TID), displacement damage dose (DDD/TNID), and single-event effects (SEE).