A motorway, also known as a freeway or expressway in some countries, is a type of road designed for high-speed traffic. It typically has several lanes in each direction, separated by a median or central reservation to prevent head-on collisions between vehicles traveling in opposite directions. Motorways are often built with grade-separated interchanges, meaning that they can be accessed and exited without stopping, allowing for smooth and continuous traffic flow. They are typically used for long distance journeys and heavy goods vehicle (HGV) transportation due to their speed limits and design features.