California Car / Permit practice question · Traffic Laws
Unless otherwise posted, what is the speed limit in a residential or business district?
Answer choices
- 15 mph
- 20 mph
- 25 mph— Correct answer
- 35 mph
Why this is the answer
In a business or residential district, the speed limit is 25 mph unless a sign says otherwise. That is the default, so you do not need a posted sign to be bound by it. Slower limits such as 15 mph apply only in specific places like alleys or blind intersections, not district streets in general.
Source: California Driver Handbook — Speed Limits
Content reviewed against official driver handbooks · August 12, 2026
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