Final answer:
A divided highway is a type of highway that has a physical barrier separating you and opposing traffic, ensuring safety and allowing for faster traffic flow.
Step-by-step explanation:
A highway that has a physical barrier separating you and opposing traffic is commonly known as a divided highway. Divided highways are designed to increase safety by preventing head-on collisions and allowing for faster and smoother traffic flow. They typically have a median or barrier between the lanes, such as a concrete wall or a grassy area, to separate the two directions of traffic. Examples of divided highways include interstate highways and expressways.