A more thorough explanation:

A highway is a public road that anyone can use. It can be a street, road, or turnpike. According to 23 CFR § 924.3, a highway can also include:

• A right-of-way
• A bridge
• A railway-highway crossing
• A tunnel
• A drainage structure
• A sign
• Markings
• A guardrail
• A protective structure
• A facility that serves pedestrians and bicyclists

For example, a highway can be a busy street in a city, a long road that connects different towns, or a toll road that requires payment to use. A highway can also include a bridge that goes over a river, a tunnel that goes through a mountain, or a sign that tells drivers where to go.

The examples illustrate the definition by showing that a highway can be any type of public road or structure that people can use to travel from one place to another. It can be a busy street in a city or a long road that connects different towns. It can also include structures like bridges, tunnels, and signs that help people navigate and stay safe while using the highway.