An intersection is a road junction where two or more roads meet or cross at the same level, categorized by road segments, traffic controls, or lane configuration. Authors such as the National Interregional Highway Committee focused on practical design, promoting grade separation to improve safety and long-term adaptability. Albert Sidney Bolles emphasized the equal rights of road users, urging care at crossings.
The Convention on Road Traffic established priority rules, such as giving way to vehicles coming from the right in right-hand driving countries. These viewpoints highlight intersections not only as essential infrastructure but also as locations of intricate interaction, balancing efficiency with the need to safeguard vulnerable road users.