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Useful Links & Data Sources
For those who want to dive deeper into Los Angeles traffic data, here are the best open sources and research hubs.
- UCLA Institute of Transportation Studies (ITS) — Research on congestion, active mobility, and urban traffic management. its.ucla.edu
- UCLA Lewis Center for Regional Policy Studies — Studies on LA commuting, public transit, and equity in mobility. lewis.ucla.edu
- UCLA Transportation Demand Management (TDM) — Campus-level strategies to reduce single-occupancy vehicles. transportation.ucla.edu
- UC Davis Institute of Transportation Studies — Statewide work on vehicle emissions, congestion, and travel behavior. its.ucdavis.edu
- UC Berkeley SafeTREC (TIMS) — Collision data and safety analysis for California roads. safetrec.berkeley.edu
- Caltrans PeMS — Live and historical freeway flow data across LA County. pems.dot.ca.gov
- L.A. Metro Projects — Bus, rail, and highway projects impacting traffic. metro.net/projects
- LADOT — Reports, open datasets, and mobility initiatives. ladot.lacity.org
- SCAG — Regional transportation modeling and long-term mobility plans. scag.ca.gov
- LA GeoHub Traffic Data — Open geospatial datasets for traffic and streets. geohub.lacity.org
- CHP SWITRS — Raw crash and incident records statewide, including LA County. iswitrs.chp.ca.gov
- California Office of Traffic Safety — Yearly rankings for collisions, injuries, DUIs. ots.ca.gov
- NHTSA — National crash and vehicle safety data. nhtsa.gov
- CARB — Research on congestion and emissions reduction strategies. arb.ca.gov
- California Transportation Commission (CTC) — Funding priorities and project pipeline. catc.ca.gov
- Urban Displacement Project — How transportation projects reshape housing and commutes. urbandisplacement.org
- Los Angeles Sustainability Plan (pLAn) — Reducing car dependency and expanding multimodal transit. plan.lamayor.org
- LA Times — Transportation — Coverage of commuting, congestion, and transit policy. latimes.com/california
- Urbanize LA — Freeway expansions, Metro projects, and TOD coverage. urbanize.city/la
- RAND Corporation — Southern California mobility and policy research. rand.org
- Google’s LA Traffic Live Map — Keep an eye on current congestion. View map
- TomTom Traffic Index – Los Angeles — Historical congestion level trends. tomtom.com/traffic-index
- Numbeo Traffic Index — Commute costs and congestion comparisons. numbeo.com/traffic
- OpenStreetMap — Base layer for custom LA visualizations. openstreetmap.org