Ramp & Roadway Report
Yearly reports of traffic volume data on major roadways and ramps in the Puget Sound area.
The Ramp and Roadway report is put together by the Traffic Management Center and published each year. These reports provide specific data on traffic volumes for major roadways and ramps in the Puget Sound area.
Since 2016, these reports are published paperless.
Yearly reports
2022 Ramp and roadway report
The 2022 version of the Ramp and Roadway report.
2022 Data station reference guide
This guide provides names of each of our data stations in the below mentioned counties for 2022. This information can be useful if requesting data from our sensor network.
2020 Ramp and roadway report
The 2020 Ramp and Roadway Report will not be published because 2020 yearly vehicle volumes were notably unrepresentative of normal traffic patterns due to the COVID-19 pandemic. Instead, the below mentioned seasonal factors documents detail traffic volumes from 2017-2019 and how they vary from month to month.
- Seasonal factors - King and Snohomish counties (PDF 1.94 MB)
- Seasonal factors - Skagit and Whatcom counties (PDF 1.95 MB)
2020 Data station reference guide
This guide provides names of each of our data stations in the below mentioned counties for 2020. This information can be useful if requesting data from our sensor network.
2019 Ramp and roadway report
The 2019 version of the Ramp and Roadway report.
2019 Data station reference guide
This guide provides names of each of our data stations in the below mentioned counties for 2019. This information can be useful if requesting data from our sensor network.
2018 Ramp and roadway report
The 2018 version of the Ramp and Roadway report.
2018 Data station reference guide
This guide provides names of each of our data stations in the below mentioned counties for 2018. This information can be useful if requesting data from our sensor network.
Please use the contact information on the top right of this page to request versions of these reports not listed above.
166,800 electric vehicle
registrations in Washington in 2023, up from 114,600 in 2022.
87 wetland compensation sites
actively monitored on 918 acres in 2023.
25,000 safe animal crossings
in the Snoqualmie Pass East Project area since 2014.