Passage: "Drivers approaching a stopped emergency vehicle with flashing lights must move over a lane when safe to do so, or slow down significantly if moving over is not possible. North Carolina's Move Over law protects troopers and other responders working at the roadside." What is the main purpose of the passage?

1. To explain the Move Over law and its purpose
2. To describe how flashing lights are wired
3. To list traffic fine amounts
4. To recount a specific crash