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Project (Caltrans // PATH) | Complete | Jan 2001—Dec 2002

Field Investigation of Advanced Vehicle Reidentification Techniques and Detector Technologies-Phase 2

Stephen Ritchie (lead), Seri Park, Shin-Ting (Cindy) Jeng, Cheol Oh, Andre (Yeow Chern) Tok

Project (CalEPA) | Complete | Mar 2020—Mar 2021

Reducing Transportation-Related Fossil Fuel Demand and Emissions

Jean-Daniel Saphores (lead), Michael Hyland, Stephen Ritchie, Kate Forrest, Blake Lane, Michael Mackinnon, Monica Ramirez-Ibarra, Andre (Yeow Chern) Tok

Project (Caltrans // PATH) | Complete | Oct 2002—Mar 2004

Anonymous Vehicle Tracking for Real-Time Freeway and Arterial Street Performance Measurement

Stephen Ritchie (lead), Seri Park, Cheol Oh, Shin-Ting (Cindy) Jeng, Andre (Yeow Chern) Tok

Project (Caltrans // PATH) | Complete | May 2004—Dec 2006

Corridor Deployment and Investigation of Anonymous Vehicle Tracking for Real-Time Traffic Performance Measurement

Stephen Ritchie (lead), Seri Park, Cheol Oh, Shin-Ting (Cindy) Jeng, Andre (Yeow Chern) Tok

Project (Caltrans // UCTC Caltrans Match) | Complete | Aug 2007—Jul 2008

Measuring Commercial Vehicle Travel Through New High Fidelity Inductive Sensors

Stephen Ritchie (lead), Andre (Yeow Chern) Tok

Project (Caltrans) | Complete | Jun 2008—Dec 2009

Online Freeway Corridor Deployment of Anonymous Vehicle Tracking for Real-Time Traffic Performance Measurement

Stephen Ritchie (lead), Sarah Hernandez, Hang Liu, Andre (Yeow Chern) Tok, Jin Choi, Justin Moy, Soyoung (Iris) You, Gunwoo Lee, Shin-Ting (Cindy) Jeng

Project (Caltrans) | Complete | Mar 2008—Feb 2010

Assessment and Development of Commodity Flow, Logistics, and Other Relevant Goods Movement Data Sources to Facilitate Statewide Freight Modeling

Stephen Ritchie (lead), Amelia Regan, Sarah Aly, Pruttipong Apivatanagul, Miyuan Zhao, Choong Heon Yang, Rex Chen, Ying Jun Chow, Andre (Yeow Chern) Tok, Dmitri Arkhipov, Shin-Ting (Cindy) Jeng, Jae Young Jung, Fatemeh Ranaiefar, Joseph Chow

Project (Caltrans) | Complete | Aug 2009—Sep 2012

Advanced Transportation Systems Management (ATMS) Testbed Program: California Testbed

Will Recker (lead), Zelma Bates, Inchul Yang, Xing Zheng, James Marca, Craig Rindt, Shin-Ting (Cindy) Jeng, Ying Jun Chow, Andre (Yeow Chern) Tok, Ming Yang, Zhe (Jared) Sun, Qi-Jian Gan, Sarah Hernandez, Lianyu Chu, Seth Contreras, Jee Eun (Jamie) Kang, Mahdieh Allahviranloo

Project (Caltrans // UCTC Caltrans Match) | Complete | Jul 2012—Jun 2013

Spatial Disaggregation of California Freight Demand

Stephen Ritchie (lead), Andre (Yeow Chern) Tok, Pedro Camargo

Project (Caltrans // UCTC Caltrans Match) | Complete | Jul 2011—Dec 2013

Development of a Weigh-in Motion Testbed (Planning Phase)

Stephen Ritchie (lead), Andre (Yeow Chern) Tok, Kyungsoo Jeong, Fatemeh Ranaiefar, Yue (Ethan) Sun

Project (Caltrans) | Complete | Oct 2011—Feb 2014

California Statewide Freight Forecasting Model

Stephen Ritchie (lead), Daniel Rodriguez-Roman, Fatemeh Ranaiefar, Soyoung (Iris) You, Pedro Camargo, Miyuan Zhao, Kyungsoo Jeong, Neda Masoud, Kyung (Kate) Hyun, Ying Jun Chow, Andre (Yeow Chern) Tok, Seth Contreras, Paulos Lakew, Michael McNally, Jae Young Jung, Craig Rindt, James Marca

Project (ITS/MRPI // MRPI) | Complete | Dec 2009—Jun 2015

Real Time Estimation of Greenhouse Gas & Other Emissions on Existing Traffic Corridors

Stephen Ritchie (lead), Andre (Yeow Chern) Tok

Project (CARB) | Complete | Apr 2013—Jun 2015

California Vehicle Inventory and Use Survey

Stephen Ritchie (lead), Kyungsoo Jeong, Jun Park, Andre (Yeow Chern) Tok

Project (CARB) | Complete | Apr 2012—Mar 2016

Development of a New Methodology to Characterize Truck body Types Along California Freeways

Stephen Ritchie (lead), Kyung (Kate) Hyun, Andre (Yeow Chern) Tok, Sarah Hernandez, Arthur Chanprakrit, Tiffany Giordano, Jun Park

Project (Caltrans) | Complete | Jul 2015—Mar 2017

Enhanced Truck Counts for California

Stephen Ritchie (lead), Kyungsoo Jeong, Kyung (Kate) Hyun, Andre (Yeow Chern) Tok, Yue (Ethan) Sun, Yiqiao Li, Zhe (Jared) Sun, Craig Rindt