ITS Publications - The Institute of Transportation Studies at UC Irvine

policy brief | December 17, 2025

policy brief | December 2025

LA County's GoPass Program Helped Build Transit Ridership While Enhancing Student Outcomes

Jean-Daniel Saphores, Farzana Khatun

policy brief | December 31, 2025

policy brief | December 2025

Free and Reduced Transit Fare Programs in California Increased After COVID-19–But Can it Last?

Jean-Daniel Saphores, Farzana Khatun

published journal article | December 31, 2025

published journal article | December 2025

Farzana Khatun and Jean-Daniel Saphores (2025) “Free transit for students to regain ridership: Users and boarding characteristics of LA Metro's GoPass program”, Journal of Transport Geography, 129, p. 104442.

policy brief | December 31, 2025

policy brief | September 2025

Susan Pike, Juan Matute, Monisha Reginald and Jean-Daniel Saphores (2025) Capacity Building is Key for Accelerating Open-loop Payments Adoption Among Transit Agencies. Policy Brief. UC ITS.

research report | April 21, 2026

research report | August 2025

Farzana Khatun and Jean-Daniel Saphores (2025) What Explains Trends in Orange County Transportation Authority Bus Ridership?. Research Report. UC ITS.

published journal article | December 31, 2025

published journal article | June 2025

Farzana Khatun and Jean-Daniel Saphores (2025) “Driver’s Licenses for Undocumented Immigrants and Bus Ridership in Orange County, California”, Transportation Research Record, 2679(6), pp. 409–425.

published journal article | March 28, 2026

published journal article | February 2025

Md Rabiul Islam and Jean-Daniel M. Saphores (2025) “WILL COVID-19 jump-start telecommuting? Evidence from California”, Transportation, 52(1), pp. 349–380.

policy brief | October 21, 2025

policy brief | January 2025

Monica Ramirez-Ibarra and Jean-Daniel Saphores (2025) What are the Public Health and Environmental Implications of Drayage Truck Electrification Targets in California?. Policy Brief. UC ITS.

research report | October 21, 2025

research report | January 2025

Miguel Jaller, Anmol Pahwa, Jean-Daniel Saphores and Michael Hyland (2025) Benefits, Challenges, and Opportunities of Different Last-Mile Delivery Strategies. Research Report. UC ITS.

conference paper | May 18, 2026

conference paper | January 2025

Shakib Kafashan and Jean-Daniel Saphores (2025) “Electrification of Off-Road Construction Vehicles: A Comparative Economic Analysis of Electric and Diesel Machinery”, in Proceedings, 104th Annual Meeting of the Transportation Research Board. Washington D.C..

policy brief | December 31, 2025

policy brief | September 2024

Jean-Daniel Saphores and Md. Rabiul Islam (2024) An L.A. Story: The Impact of Housing Costs on Commuting. Policy Brief. UC ITS.

policy brief | October 21, 2025

policy brief | August 2024

Md. Rabiul Islam and Jean-Daniel Saphores (2024) Did COVID-19 Fundamentally Reshape Telecommuting in California?. Policy Brief. UC ITS.

policy brief | October 30, 2025

policy brief | August 2024

Jean-Daniel Saphores and Farzana Khatun (2024) Did Extending Driver Licenses to Individuals Without Legal Presence Affect Transit Ridership in Orange County?. Policy Brief. UC ITS.

policy brief | December 31, 2025

policy brief | August 2024

Jean-Daniel Saphores and Lu Xu (2024) Grocery Shopping in California and COVID-19: Transportation, Environmental Justice, and Policy Implications. Policy Brief. UC ITS.

policy brief | May 19, 2026

policy brief | August 2024

Jean-Daniel Saphores and Monica Ramirez-Ibarra (2024) Transitioning to Electric Drayage Trucks May Help Avoid Adding New Freeway Lanes to Freight Corridors in Southern California. Policy Brief. UC ITS.

research report | March 28, 2026

research report | June 2024

Jean-Daniel Saphores and Farzana Khatun (2024) Enhancing Student Outcomes While Strengthening Transit: An Analysis of LA Metro’s GoPass Fareless Pilot Program. Final Report PSR 22-23 TO 068. PSR / ITS-Irvine.

published journal article | October 21, 2025

published journal article | February 2024

Monica Ramirez-Ibarra and Jean-Daniel M. Saphores (2024) “Lane Management Strategies in a Connected Environment: Analysis of Freight Corridor Scenarios for I-710 in Southern California”, Transportation Research Record: Journal of the Transportation Research Board, 2678(2), pp. 620–634.

published journal article | April 04, 2026

published journal article | February 2024

Lu Xu and Jean-Daniel Saphores (2024) “Does <i>e</i>-shopping impact household travel? Evidence from the 2017 U.S. NHTS”, Journal of Transport Geography, 115, p. 103827.

conference paper | October 30, 2025

conference paper | January 2024

Bumsub Park and Jean-Daniel Saphores (2024) “Restaurant Food Consumption in the Time of the Pandemic - A California Case Study”. Transportation Research Board 103rd Annual Meeting.

published journal article | December 31, 2025

published journal article | January 2024

Yunwen Feng, Jean-Daniel Saphores, Hilary Nixon and Monica Ramirez-Ibarra (2024) “Battery Electric Vehicles: Travel Characteristics of Early Adopters”, Sustainability, 16(10), p. 4263.