USAREUR Practice Exam

A continuous, solid, white center line on the road signifies that crossing the line is prohibited; this line represents a barrier for lane changes. This means that vehicles must remain within their designated lane and avoid crossing over the line, both for safety reasons and to maintain traffic flow. This type of marking is typically used in situations where lane changes might be unsafe, such as narrow roads or areas where visibility is limited. The other choices do not accurately reflect the meaning of a solid white line: crossing it for passing or touching it with wheels would not comply with the traffic regulations that are intended to ensure the safety of all road users.