Data AnalysisVerified
Reviewed and published by trentmaziarz, June 30, 2026. Discovered and drafted by our automated research pipeline.
The City of Boston integrated Google's Project Green Light, an AI system that analyzes traffic patterns and produces recommendations for adjusting traffic signal timing to reduce congestion. Boston's transportation engineers review each recommendation before implementing it.
Details
The partnership with Google's Project Green Light began in February 2024. The system uses AI and Google Maps driving trend data to model traffic patterns at signalized intersections and recommend timing adjustments. Boston Transportation Department engineers assessed each recommendation for safety, feasibility, and effectiveness before implementation. At two intersections — Huntington Ave. & Opera Place and Amory Street & Green Street — stop-and-go traffic was reduced by over 50% after recommendations were applied.
Products affected
Boston traffic signal network
Sources & Evidence
Company Disclosure
Cite this record
Trace Foundation. (2026). City of Boston: The City of Boston integrated Google's Project Green Light, an AI system that analyzes traffic patterns and produces recommendations for adjusting traffic signal timing to reduce congestion. Boston's transportation engineers review each recommendation before implementing it (data as of 2026-06-30) [Data set record]. AI Trace. https://www.aitrace.org/r/practice/32e85790-9358-4aa9-81ae-c992dba309b8. Accessed October 5, 2026.
- Stable link
- https://www.aitrace.org/r/practice/32e85790-9358-4aa9-81ae-c992dba309b8
- Data as of
- June 30, 2026
- Last verified
- Not recorded
Other practices by City of Boston
Customer SvcThe City of Boston integrated an AI-native platform called Creatio into its 311 non-emergency services system, replacing a legacy system that had operated since 2008. The new platform uses predictive machine learning to recommend next steps in service workflows and generative AI to support natural language interactions between staff and the system.ProductivityThe City of Boston used Google's Gemini 1.5 Pro large language model to automatically generate descriptive titles for more than 1,100 City Council roll call vote records spanning the past 16 years, making historical voting data easier for residents to browse. The city described this as its first public use of generative AI on Boston.gov, launched in May 2024.Customer SvcThe City of Boston deployed a beta AI search feature on Boston.gov, powered by Google Gemini, that gives residents direct answers to questions about city services rather than a list of links. As of December 2025, the feature is live on the 60 most visited pages of Boston.gov.
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