Under what condition is crossing a solid white line permitted?

• A. To pass another vehicle in the same lane.
• B. To enter the highway from the shoulder or to avoid a hazard when allowed.
• C. At any time you choose.
• D. Never.

Answer: (B)

Crossing a solid white line is allowed only for entering or exiting the roadway or to avoid a hazard when it can be done safely. This line marks edges and boundaries, and you should not cross it for passing or for any other reason. So the permitted scenario is using that crossing to get onto the highway from the shoulder (or away from a hazard) when it’s safe and legal to do so. The idea isn’t to pass in the same lane, and you wouldn’t cross a solid line just because you want to.