Seat belt and child passenger laws fall under which category?

Seat belt and child passenger laws are categorized under occupant safety because their primary purpose is to ensure the protection of individuals within a vehicle during travel. These laws aim to minimize injuries and fatalities resulting from automobile accidents by mandating the use of seat belts and the appropriate restraint systems for children. By focusing on the safety of passengers, these regulations contribute directly to reducing the risks associated with vehicle collisions.

The other options, while related to broader aspects of transportation and road use, do not specifically highlight the intention of these laws, which is to protect occupants of vehicles rather than regulate traffic flow, public health, or standards of vehicle operation.