Speed limits are determined by the results of an engineering and traffic survey along a specified zone (geographic area). The survey includes a review of:
- accident history
- existing traffic conditions
- nature of the zone (commercial, residential, etc.)
The data is analyzed and an appropriate speed limit is determined. Speed limits can only be changed if the results of the engineering and traffic survey justify a change.
For more information, please call Transportation at 510-583-4783
Speed limits for Foothill Boulevard, Jackson Street and Mission Boulevard (state highways) and interstate highways like I-880 are covered by the State Traffic Code.
For more information on speed limits for state or interstate highways, please call the State California Department of Transportation at 916-654-5266 or by email through the following link: State California Department of Transportation
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