USAREUR Practice Exam

What indicates that a driver should not cross a solid white center line?

1. It is a guideline

2. It is a traffic suggestion

3. It is a law that must be followed

4. It applies only to trucks

The correct answer is: It is a law that must be followed

A solid white center line serves as a regulatory marker on the road, indicating that crossing it is not permitted. This solid line is established as part of traffic laws in various jurisdictions, and it signifies that the lane on the other side is either for oncoming traffic or reserved for specific purposes, such as turning or merging in a safe manner. Unlike dashed lines, which permit lane changes when safe, a solid white line instructs drivers to remain in their lane, thereby enhancing safety on the road. Following this law helps to prevent accidents that could arise from improper lane changes, especially in high-traffic or high-speed environments. Recognizing this regulation is crucial for all drivers to ensure compliance and practice safe driving behaviors.