What is the primary responsibility of the National Transportation Safety Board (NTSB)?

The primary responsibility of the National Transportation Safety Board (NTSB) is investigating transportation accidents. This involves determining the causes of accidents across various modes of transportation, including aviation, rail, highway, marine, and pipeline incidents. The NTSB conducts thorough investigations to gather evidence, analyze data, and make safety recommendations aimed at preventing similar accidents in the future.

This core function sets the NTSB apart from regulatory bodies that focus on safety standards or operational oversight. As the agency responsible for investigating accidents, the NTSB plays a crucial role in understanding the factors that contribute to accidents and improving overall transportation safety through its findings and recommendations. Other options, such as regulating air traffic safety, scheduling flights, or conducting pilot training programs, are not within the NTSB's jurisdiction, as these responsibilities are managed by other organizations and agencies in the transportation sector.