California Car / Permit practice question · Traffic Laws
Unless otherwise posted, what is the maximum speed limit on most two-lane undivided highways in California?
Answer choices
- 45 mph
- 55 mph— Correct answer
- 65 mph
- 70 mph
Why this is the answer
Unless a different limit is posted, the maximum speed on a two-lane undivided highway is 55 mph. The same 55 mph limit applies to vehicles towing trailers. The ideal maximum on most other California highways is 65 mph, so that figure does not fit a two-lane undivided road, and 45 mph is not the default anywhere here.
Source: California Driver Handbook — Maximum Speed Limit
Content reviewed against official driver handbooks · August 12, 2026
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