Traffic Surveys


Traffic Volume Count Circle

Traffic Volume Count (County-Maintained Roads)

Traffic Speed Survey

Speed Survey (County-Maintained Roads)

Alternate Views of the Map

Average Daily Traffic - Vehicles Per Day

ADT Color Ramp - 300x16
500 or Less5,00010,000 or More

85th Percentile Speed - Miles Per Hour

MHP Color Ramp 1
30 or Less45 or Higher

Map Information

The above map displays traffic counts and speed surveys conducted on County-maintained roads. NOTE: Roads that are within city limits, state highways, or private property do not belong to the County-Maintained Road System.

Contact Information

Business Hours
Monday – Friday
8:00 AM – 5:00 PM
Contact us by Phone
Office Location
La Plaza B
2300 County Center Drive
Suite B 100
Santa Rosa, CA 95403
38.462023, -122.725381

Interactive Maps

Sonoma County Interactive Maps


Thematic interactive maps for Sonoma County