Which of the following is NOT a responsibility of NHTSA?

Answer: D — Provide quality research on traffic congestion effects on wildlife

The National Highway Traffic Safety Administration (NHTSA) is primarily focused on improving road safety and reducing traffic accidents, injuries, and fatalities. Its responsibilities include providing education on traffic safety, enforcing traffic laws and regulations to ensure compliance, and developing safety standards that can enhance road safety and reduce economic costs related to vehicle accidents. While NHTSA does engage in research to better understand traffic safety and to develop programs and policies, their primary mission does not extend to addressing the effects of traffic congestion specifically on wildlife. The impact of traffic congestion on wildlife, while important, falls outside the core responsibilities of the agency, which are centered around direct traffic safety initiatives and regulations. Thus, this particular choice correctly identifies an area that is not a responsibility of NHTSA.