Transportation safety is a research area that focuses on preventing or reducing accidents and injuries in all modes of transportation, including road, rail, air, and water. This field encompasses a wide range of topics, such as traffic laws and regulations, vehicle design and safety features, driver behavior and psychology, infrastructure maintenance and design, and emergency response protocols. Researchers in this area use a variety of methods, including data analysis, simulations, and field studies, to identify risk factors and develop strategies to improve safety for all travelers. The ultimate goal of transportation safety research is to create a safer and more efficient transportation system for everyone.