California Car / Permit practice question · Signals & Pavement Markings
Double solid white lines separating a regular lane from a carpool (HOV) lane mean you should:
Answer choices
- Never cross them; wait for a broken white line section— Correct answer
- Cross freely if you meet the carpool requirement
- Cross only during posted HOV hours
- Treat them the same as a single broken line
Why this is the answer
Double solid white lines form a lane barrier between a regular lane and a preferential lane such as a carpool lane. Never change lanes over them, even if you qualify to use the carpool lane. Wait until you see a single broken white line, and use the designated entrances and exits instead.
Source: California Driver Handbook — Pavement Markings
Content reviewed against official driver handbooks · August 12, 2026
More Signals & Pavement Markings questions
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