Traffic Census Program
Traffic Counts (a.k.a. Traffic Volumes) are for the State Highway System only (in various formats).
Highways are signed as Interstate, California State Route, or United States Route. See examples below:
Traffic count information for city and county streets may be found at the city Traffic Engineering or Public Works Department, or the Community Development Office in the area where the street is located.
Caltrans Traffic Counts are summarized annually into four categories:
Traffic Volumes: Annual Average Daily Traffic (AADT)
For ALL vehicles on CA State Highways.
by Webpage: 2017
**An error was reported on the Traffic Volumes on California State Highways Years 2009, 2010, 2011, and 2012. Located in the Preface (Page ii), Traffic Trend on Year 2008 over 2007 reads +3.5%. Instead, this number should be reported as -3.5%.
Truck Traffic: Annual Average Daily Truck Traffic
For truck traffic on CA State Highways.2017 (XLS) | 2016 (XLS) | 2015 (XLSX) | 2014 (XLS) | 2013 (XLSX)
- District 1: 2017-D1 (PDF) | 2016-D1 (PDF)
- District 2: 2017-D2 (PDF) | 2016-D2 (PDF)
- District 3: 2017-D3 (PDF) | 2016-D3 (PDF)
- District 4: 2017-D4 (PDF) | 2016-D4 (PDF)
- District 5: 2017-D5 (PDF) | 2016-D5 (PDF)
- District 6: 2017-D6 (PDF) | 2016-D6 (PDF)
- District 7: 2017-D7 (PDF) | 2016-D7 (PDF)
- District 8: 2017-D8 (PDF) | 2016-D8 (PDF)
- District 9: 2017-D9 (PDF) | 2016-D9 (PDF)
- District 10: 2017-D10 (PDF) | 2016-D10 (PDF)
- District 11: 2017-D11 (PDF) | 2016-D11 (PDF)
- District 12: 2017-D12 (PDF) | 2016-D12 (PDF)
- District 1: 2017 (XLS)
- District 2: 2017 (XLS)
- District 3: 2017 (XLS)
- District 4: 2017 (XLS)
- District 5: 2017 (XLS)
- District 6: 2017 (XLS)
- District 7: 2017 (XLS)
- District 8: 2017 (XLS)
- District 9: 2017 (XLS)
- District 10: 2017 (XLS)
- District 11: 2017 (XLS)
- District 12: 2017 (XLS)
Peak Hour Volume Data
For questions regarding AADT reports, Ramp Volumes, or the Peak Hour Volume Data Reports above, please contact: Cindy.Pribyl@dot.ca.gov.
For questions regarding Truck AADT, please contact Diana Tham: email@example.com.
For AADT GIS data, visit the Highway Performance Monitoring System (HPMS) Data webpage, under the Division of Research, Innovation and System Information (DRISI).
Traffic Census Program
- Traffic Census Homepage
- Monthly Vehicle Miles of Travel (MVMT)
- Traffic Counts (Volumes)
- Explanation of Traffic Counts (PDF)
- Traffic Volume Trends (TVT) FAQ
- Traffic Data FAQ (PDF)