Earlier editions: 2026-07
Title 10 — Vehicles and Traffic
Napa Municipal Code Ch. 10.20 Speed Limits
Napa Municipal Code · 2026-10 edition · updated 2026-10-04 · Napa
Cite as: Napa Municipal Code Chapter 10.20 · Text as of 2026-10-04
§ 10.20.010. Prima facie speed limits and establishment of declared speed…¶
A. Purpose. The State of California has asserted broad authority over, and a statewide interest in, the entire field of regulating vehicles and traffic (as set forth in the California Vehicle Code, particularly Section 21). The State has established a set of prima facie speed limits applicable to various classes roadway types, districts and locations (see California Vehicle Code Sections 22348 through 22366). The State has expressly authorized the City to establish declared speed limits that differ from the prima facie speed limits set under state law, if, based on engineering and traffic surveys, the declared speed limit would facilitate the orderly movement of vehicles and traffic, and would be reasonable and safe (see California Vehicle Code Sections 22357, 22357.1, 22358, 22358.3, 22358.4, and 22360). The intent of this chapter is to implement the City's authority to establish declared speed limits when supported by engineering and traffic surveys.
B. Definitions. The following words and phrases, whenever used in this chapter, shall be construed as defined in this section:
"Declared speed limit"
means the speed limits for individual streets and roadway segments determined and declared by the City Council in accordance with this chapter, as authorized by the California Vehicle Code. The term "declared speed limit" (as used in this chapter) shall include the "declared prima facie speed limit" or "maximum speed limit" (as used in California Vehicle Code Section 22357), or the "prima facie speed limit" (as used in California Vehicle Code Sections 22358 22358.3 and 22358.4).
"Director"
means the Public Works Director, or a designee of the Public Works Director or the City Manager.
"Prima facie speed limits"
means the default speed limits for streets and highways established under California State Law, as generally set forth in the California Vehicle Code, particularly Sections 22348, et. seq., unless amended under this chapter.
(O2016-15, 11/15/16)
§ 10.20.020. Increase of prima facie speed limits.¶
The City Council may determine and declare speed limits higher than the Prima Facie Speed Limits for any particular City street or roadway segment if the City Council determines by resolution, upon the basis of an engineering and traffic survey, that a speed greater than the Prima Facie Speed Limit is most appropriate to facilitate the orderly movement of vehicular traffic and is reasonable and safe. (See California Vehicle Code Sections 627, 22357, 22358 and 22358.4.)
(O2016-15, 11/15/16)
§ 10.20.030. Decrease of prima facie speed limits.¶
The City Council may determine and declare speed limits lower than the Prima Facie Speed Limits for any particular street or roadway segment if the City Council determines by resolution, upon the basis of an engineering and traffic survey, that the Prima Facie Speed Limit is more than is reasonable or safe, that the Declared Speed Limit is most appropriate to facilitate the orderly movement of traffic, and is reasonable and safe. (See California Vehicle Code Sections 627 and 22358 and 22358.4.)
(O2016-15, 11/15/16)
§ 10.20.040. Declared speed limits.¶
The City Council hereby determines and declares, based on a resolution adopted in accordance with this chapter, that the declared speed limits for the following streets or roadway segments shall be as set forth in this section, below. No person shall drive a vehicle at a speed greater than the declared speed limit for the street segment:
| Street or Roadway Segment | Declared Speed Limit (mph) |
|---|---|
| Austin Way – Browns Valley Road to Scenic Drive | 25 |
| Beard Road – Pueblo Avenue to Trancas Street | 25 |
| Big Ranch Road – Trancas Street to City Limits (north) | 45 |
| Browns Valley Road – Partrick Road (west) to Redwood Road | 30 |
| Browns Valley Road – Partrick Road (west) to Partrick Road (east) | 25 |
| Browns Valley Road – Partrick Road (east) to Laurel Street | 30 |
| Buhman Avenue – City Limit (south) to Crestview Way | 35 |
| Buhman Avenue – Crestview Way to Browns Valley Road | 25 |
| Byway East – Wise Drive to Salvador Avenue | 25 |
| California Boulevard – Laurel Street to Second Street | 25 |
| California Boulevard – Second Street to Lincoln Avenue | 30 |
| California Boulevard – Lincoln Avenue to Pueblo Avenue | 30 |
| California Boulevard – Pueblo Avenue to Trancas Street | 30 |
| Central Avenue – Jefferson Street to Soscol Avenue | 25 |
| Clark Street – Silverado Trail to East Avenue | 25 |
| Coombs Street – Spruce Street to Division Street | 25 |
| Coombs Street – Division Street to Grigsby Court | 20 |
| Coombsville Road – Silverado Trail to Terrace Drive | 35 |
| Coombsville Road – Terrace Drive to City Limit (east) | 30 |
| Dry Creek Road – Redwood Road to Trower Avenue | 40 |
| Dry Creek Road – Trower Avenue to City Limit (north) | 40 |
| East Avenue – Silverado Trail (south) to East First Street | 25 |
| East Avenue – East First Street to Silverado Trail (north) | 25 |
| El Centro Avenue – Byway East to Jefferson Street | 30 |
| El Centro Avenue – Jefferson Street to City Limit (east) | 30 |
| Fifth Street – Coombs Street to Main Street | 20 |
| First Street – Laurel Street to California Boulevard | 30 |
| First Street – California Boulevard to Jefferson Street | 25 |
| First Street – Jefferson Street to Soscol Avenue | 20 |
| First Street – Soscol Avenue to Silverado Trail | 25 |
| First Street – Silverado Trail to East Avenue | 25 |
| Foothill Boulevard – Old Sonoma Road to Laurel Street | 25 |
| Foster Road – City Limit (south) to St Francis Circle (south) | 40 |
| Foster Road – St Francis (south) to West Imola Avenue | 30 |
| Foster Road – West Imola Avenue to Old Sonoma Road | 25 |
| Fourth Street – Third Street to Coombs Street | 20 |
| Franklin Street – Fourth Street to Pearl Street | 20 |
| Freeway Drive – Old Sonoma Road to Laurel Street | 30 |
| Freeway Drive – Laurel Street to First Street | 30 |
| Gasser Drive – Imola Avenue to Kansas Avenue | 30 |
| Gasser Drive – Kansas Avenue to Soscol Avenue | 30 |
| Golden Gate Drive – City Limit (south) to West Imola Avenue | 30 |
| Hagen Road – Silverado Trail to City Limit (east) | 35 |
| Imola Avenue – Soscol Avenue to Shurtleff Avenue | 30 |
| Imola Avenue – Shurtleff Avenue to east City Limit | 30 |
| Jefferson Street – Old Sonoma Road to Laurel Street | 25 |
| Jefferson Street – Laurel Street to Calistoga Avenue | 25 |
| Jefferson Street – Calistoga Avenue to Lincoln Avenue | 30 |
| Jefferson Street – Lincoln Avenue to Pueblo Avenue | 30 |
| Jefferson Street – Pueblo Avenue to Trancas Street | 30 |
| Jefferson Street – Trancas Street to Trower Avenue | 30 |
| Jefferson Street – Trower Avenue to Salvador Avenue | 30 |
| Kaiser Road – City Limit (west) to State Route 221 | 35 |
| Kansas Avenue – Gasser Drive to Soscol Avenue | 25 |
| Kansas Avenue – Soscol Avenue to Shurtleff Avenue | 25 |
| Kilburn Avenue – Laurel Street to Freeway Drive | 25 |
| Laurel Street – First Street to Griggs Lane | 25 |
| Laurel Street – Griggs Lane to Freeway Drive | 25 |
| Laurel Street – California Boulevard to Jefferson Street | 25 |
| Laurel Street – Jefferson Street to Riverside Drive | 25 |
| Lincoln Avenue – Solano Avenue to Jefferson Street | 30 |
| Lincoln Avenue – Jefferson Street to Soscol Avenue | 30 |
| Lincoln Avenue – Soscol Avenue to Silverado Trail | 30 |
| Linda Vista Avenue – Lone Oak Avenue to West Pueblo Avenue | 25 |
| Linda Vista Avenue – West Pueblo Avenue to Redwood Road | 25 |
| Linda Vista Avenue – Redwood Road to Trower Avenue | 25 |
| Linda Vista Avenue – Trower Avenue to City Limit (north) | 25 |
| Lone Oak Avenue – Linda Vista Avenue to West Lincoln Avenue | 25 |
| Maher Street – Trower Avenue to Wine Country Avenue | 25 |
| Main Street – Fifth Street to Pearl Street | 20 |
| Main Street – Pearl Street to Jackson Street | 25 |
| Main Street – Jackson Street to Lincoln Avenue | 25 |
| Main Street – Lincoln Avenue to Pueblo Avenue | 25 |
| McKinstry Street – First Street to Soscol Avenue | 25 |
| Montecito Boulevard – East Avenue to Eastern Terminous | 25 |
| Napa Valley Corporate Drive – City Limit (south) to NV Corporate Way | 35 |
| Napa Valley Corporate Drive – NV Corporate Way to Kaiser Road | 35 |
| Napa Valley Corporate Way – NV Corporate Drive to State Route 221 | 35 |
| Old Sonoma Road – City Limit (west) to Foster Road | 35 |
| Old Sonoma Road – Foster Road to Jefferson Street | 25 |
| Old Soscol Way – Soscol Avenue to Trancas Street | 25 |
| Orchard Avenue – City Limit (west) to Solano Avenue | 30 |
| Oxford Street – Carol Drive to Trower Avenue | 25 |
| Partrick Road – City Limit (west) to Browns Valley Road (west) | 30 |
| Partrick Road – Browns Valley Road (west) to Browns Valley Road (east) | 30 |
| Pearl Street – Franklin Street to Soscol Avenue | 20 |
| Pinewood Drive – Scenic Drive to West Pueblo Avenue | 25 |
| Pueblo Avenue – California Boulevard to Jefferson Street | 25 |
| Pueblo Avenue – Jefferson Street to Soscol Avenue | 25 |
| Redwood Road – City Limit (west) to Dry Creek Road | 30 |
| Redwood Road – Dry Creek Road to Solano Avenue | 30 |
| Robinson Lane – Browns Valley Road to Linda Vista Avenue | 25 |
| Salvador Avenue – State Route 29 to City Limit (east) | 25 |
| Saratoga Drive – Silverado Trail to Capitola Drive | 25 |
| Saratoga Drive – Capitola Drive to Terrace Drive | 25 |
| Scenic Drive – Browns Valley Road to Austin Way | 25 |
| Scenic Drive – Austin Way to Larkin Way | 25 |
| Second Street – California Boulevard to Jefferson Street | 25 |
| Second Street – Jefferson Street to Main Street | 20 |
| Seminary Street – Pine Street to Oak Street | 25 |
| Seminary Street – Oak Street to Clay Street | 20 |
| Seminary Street – Clay Street to Hayes Street | 25 |
| Shetler Avenue – Soscol Avenue to Parrish Road | 25 |
| Shetler Avenue – Parrish Road to Sommer Street | 25 |
| Shurtleff Avenue – Imola Avenue to Terrace Drive | 25 |
| Sierra Avenue – State Route 29 to Jefferson Street | 25 |
| Solano Avenue – Lincoln Avenue to Redwood Road | 35 |
| Solano Avenue – Redwood Road to Trower Avenue | 35 |
| Solano Avenue – Trower Avenue to Salvador Avenue | 35 |
| Solano Avenue – Salvador Avenue to City Limit (north) | 40 |
| Soscol Avenue – Silverado Trail to Third Street | 35 |
| Soscol Avenue – Third Street to Lincoln Avenue | 35 |
| Soscol Avenue – Lincoln Avenue to Pueblo Avenue | 35 |
| Soscol Avenue – Pueblo Avenue to Trancas Street | 35 |
| South Coombs Street – Imola Avenue to Spruce Street | 25 |
| South Freeway Drive – Imola Avenue to Old Sonoma Road | 35 |
| South Jefferson Street – City Limit (south) to Imola Avenue | 30 |
| South Jefferson Street – Imola Avenue to Old Sonoma Road | 25 |
| South Terrace Drive – Imola Avenue to Cayetano Drive | 25 |
| Terrace Drive – Shurtleff Avenue to Coombsville Road | 30 |
| Third Street – California Boulevard to Jefferson Street | 25 |
| Third Street – Jefferson Street to Soscol Avenue | 20 |
| Third Street – Soscol Avenue to Silverado Trail | 25 |
| Thompson Avenue – City Limit (south) to Browns Valley Road | 25 |
| Trancas Street – Solano Avenue to Jefferson Street | 30 |
| Trancas Street – Jefferson Street to Big Ranch Road | 30 |
| Trancas Street – Big Ranch Road to City Limit (east) | 30 |
| Trower Avenue – Dry Creek Road to Linda Vista Avenue | 30 |
| Trower Avenue – Linda Vista Avenue to Solano Avenue | 30 |
| Trower Avenue – State Route 29 to Jefferson Street | 25 |
| Trower Avenue – Jefferson Street to City Limit (east) | 25 |
| Vallejo Street – Seminary Street to Soscol Avenue | 25 |
| Villa Lane – Trancas Street to Northern Terminous | 25 |
| Walnut Street – Old Sonoma Road to Laurel Street | 25 |
| West Imola Avenue – Foster Road to State Route 29 | 25 |
| West Lincoln Avenue – Lone Oak Avenue to Solano Avenue | 25 |
| West Pueblo Avenue – Redwood Road to Linda Vista Avenue | 25 |
| West Pueblo Avenue – Linda Vista Avenue to Solano Avenue | 25 |
| Westview Drive – Browns Valley Road to Redwood Road | 25 |
| Wine County Avenue – Linda Vista Avenue to State Route 29 | 30 |
| Yajome Street – Pearl Street to Lincoln Avenue | 25 |
| Yajome Street – Lincoln Avenue to Pueblo Avenue | 25 |
(O2016-15, 11/15/16; O2018-003, 1/16/18; O2019-002, 1/15/19; O2022-002, 2/1/22; O2023-001, 2/21/23; O2026-005, 6/2/2026)
§ 10.20.050. Installation of signs giving notice of declared speed limits.¶
The Director is hereby authorized and directed to erect signs giving notice of the Declared Speed Limits established under this chapter.
(O2016-15, 11/15/16)
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