Caltrans Performance Measurement System (PeMS)

PeMS is open-source software that is designed, developed, and maintained by Compiler LLC on behalf of Caltrans Traffic Operations.
Active
In Los Angeles, CA
Open-source

Parent organization:

Compiler LLC

Caltrans Performance Measurement System (PeMS)
Org. type: For-profit business / social enterprise / B Corp
Project type: Tool or platform
Categories: Evaluate impact
Tags: mass transit
Last modified: Nov 12, 2025 Added: Aug 6, 2025
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