These are:

Route signs.
Speed limit signs.
Miles-left signs.
Regulatory signs.
Explanation

From left to right, these standardized markers represent: state, U.S., and interstate routes. Route signs are important tools for navigation, with shapes and colors that help drivers quickly identify the type of road:

- State route signs vary by state and may include local symbols or unique designs.
- U.S. route signs are black and white with a standard shield shape used nationwide.
- Interstate route signs use a red, white, and blue shield to indicate a federal interstate highway.

Knowing these differences helps drivers choose the correct route, follow directions more easily, and avoid missed turns or sudden stops. Always watch for these signs when navigating unfamiliar areas.

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