Version 1.0.3.1
Last Updated: 10/19/2025

The California Active Transportation Data Portal (CAT Data Portal) was developed to collect, store, and visualize bicyclist, pedestrian, wheelchair, and other micromobility device volume counts for infrastructure and planning projects across California. This data portal is expected to serve the following purposes:

1. • Provide a standardized methodology for pre and post counts required by the Active Transportation Program (ATP)
2. • Store data for agencies to use in the development of seasonal adjustment factors for short duration counts, and other modal analysis
3. • Provide an open data set for researchers interested in analyzing trends in bicycle and pedestrian trips and mode shift
4. • Support active transportation planning by providing a “one-stop-shop" of data commonly used in active transportation planning

Register for a free account to access the tools and resources on the CAT Data Portal.

The CAT Data Portal builds off of previous regional resources for active transportation count data storage.

1. 2012

   UCLA and SCAG Build LA Bike Data Hub

   The University of California Los Angeles (UCLA) Lewis Center received funding from the Southern California Association of Governments (SCAG) to build the Bicycle Data Clearinghouse, a county-wide resource for collection and standardization of bicyclist count data for Los Angeles County municipalities.

2. 2017

   SCAG Expands ATDB with Pedestrian Data

   Active Transportation Database (ATDB) was developed by SCAG to expand functionality and incorporate pedestrian count data.

3. 2020

   SCAG and Caltrans Plan Statewide System

   SCAG and the California Department of Transportation (Caltrans) partnered to define the scope for an expanded statewide system to be developed by a university partner and owned by Caltrans.

4. 2024

   ATDB Migrated to UC Berkeley SafeTREC

   ATDB was migrated to the UC Berkeley SafeTREC server for hosting while SafeTREC developed the new statewide system with additional functionalities.

5. 2025

   CAT Data Portal released

   August 15, 2025

If the CAT Data Portal does not currently support a data upload format that you feel would be helpful, please contact catdataportal@berkeley.edu to coordinate development.

This web-based system and the data it contains is provided for general information purposes only. Your use of or reliance upon any information within this system is at your own risk.