Travel data

Learn about our traffic data collection program and the data and services we provide such as annual mileage and travel information, peak hour vehicle traffic report, traffic count services, traffic data request and summary statistics, and vehicle speed reports.

Annual mileage and travel information

Statewide mileage and travel information based on public roadway data provided annually to the Federal Highway Administration (FHWA).

Ramp & Roadway Report

Yearly reports of traffic volume data on major roadways and ramps in the Puget Sound area.

Traffic count data

Get access to data and statistics collected through our vehicular traffic data monitoring program.

Congestion & multimodal mobility reports

Find information on annual multimodal mobility and congestion trends as well as regular volume and speed updates on highway, freight and toll systems.

Bicyclist and pedestrian count programs

Learn about our bike and pedestrian count programs made possible by our network of permanent counters.  Access count data through our portal.

Traffic count services

We provide traffic data and retrieval services for the purpose of collecting traffic volume, traffic speed and other traffic data elements.

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Highlights from the Gray Notebook

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.