Completed Projects
- Autonomous Vehicles and their potential to shift transit ridership in urban areas
USDOT through The Center for Transportation, Equity, Decisions and Dollars (CTEDD), Co-PI, 9/15/2018-9/14/2019, Collaborator: Andrea Hicks (PI), $69,942 (+ $34,938 match) - Vehicular traffic modeling and control in mixed manual and automated environments
National Science Foundation, PI, Collaborators: David Noyce (Co-PI, UW-Madison), Madhav Chitturi (Co-PI, TOPS Lab, UW-Madison), Danjue Chen (Postdoc Co-author), 09/2015-08/2019, $393,883 - Analytical Methods for Work Zone Travel Time Reliability
SWZDI, PI, Collaborators: Madhav Chitturi (Co-PI, TOPS Lab, UW-Madison), 05/2017-05/2018, $68,922 - M-VISTA: a Many-Vehicle In-Silico Traffic Analysis tool
UW-Madison CoE RIC, Co-PI (Lead PI: Dan Negurut), 09/2016-08/2017, $61,000 - Wisconsin Transport & Mobility Systems Institute (TransMoSys)
UW-Madison CoE RIC, Co-PI (Lead PI: David Noyce), 09/2016-08/2017, $80,000 - Multi-scale, distributed and coordinated control system using connected autonomous vehicles
UW-Madison: Office of the Vice Chancellor for Research and Graduate Education
PI, 09/01/2015-08/31/2018, $38,823 - Second Strategic Highway Research Program (SHRP2) Education Connection
Federal Highway Administration, Co-PI, Collaborators: David Noyce (PI, UW-Madison), Madhav Chitturi (Senior Personnel, TOPS Lab, UW-Madison), 07/2015-07/2016, $10,000 - Effects of Heavy Vehicles on Dynamic Traffic Features
National Center for Freight & Infrastructure Research & Education, PI, Collaborator: David Noyce (UW-Madison), 09/2014-08/2015, $94,703 (excluding matching amount) - Work Zone Capacity and Diversion Field Studies
Wisconsin Department of Transportation, PI, Collaborators: John Shaw, Madhav Chitturi (TOPS Lab, UW-Madison), 07/2014-06/2016, $125,000 - SHRP IIL33: Validation of Urban Freeway Models
Transportation Research Board, SHRP II, Co-PI on subcontract (Lead: Iteris, ASU PI: Pitu Mirchandani), Collaborators: Ram Pendyala (ASU), George Runger (ASU), 12/2012-05/2014, $500,000 (Ahn’s recognition: $78,750) - CAREER: Dynamic state transitions in vehicular traffic and the effects of driver behavior
National Science Foundation, PI, 03/2012-02/2017, $400,000 (Ahn: $400,000) - 2010 National Summer Transportation Institute
US Department of Transportation, Co-PI (PI: Stephen Rippon), 06/2010-07/2010, $21,450 (Ahn: $10,725) - CODES (Crash Outcome Data Evaluation System)
Governor's Office of Highway Safety, PI, Collaborator: Simon Washington (Univ. of California, Berkeley), 06/2009-09/2009, $50,000 (Ahn: $50,000) - Collaborative Research: Analysis and Modeling of Traffic Instabilities in Congested Traffic
National Science Foundation, Lead PI, Collaborator: Jorge Laval (Georgia Tech), 08/2009-07/2011, $270,141 (Ahn: $145,459) - Analysis of Freeway Bottlenecks
Arizona Department Transportation, Federal Highway Administration, PI, 08/2009-07/2010, $80,000 (Ahn: $80,000) - Countermeasures to Reduce Large Truck Crashes
Arizona Department Transportation, Federal Highway Administration, PI, Collaborator: Simon Washington (ASU), 02/2008-06/2010, $100,000 (Ahn: $90,000) - Automatic Vehicle Location (AVL) For Maintenance Work Effort Tracking
Arizona Department Transportation, Federal Highway Administration, Co-PI (PI: Aaron Golub), 02/2008-06/2009, $20,000 (Ahn: $6,600) - Vehicle Infrastructure Integration (VII) Technologies for Emergency/Incident Management: Proof of Concepts
Arizona Department Transportation, Federal Highway Administration, ASU PI (Lead PI: Pitu Mirchandani (Univ. of Arizona)), Collaborators: Larry Head (Univ. of Arizona), Kimley-Horn and Associates, Aaron Golub (ASU), 01/2008-06/2009, $200,000 (Ahn: $23,450) - Empirical Observation of the Impact of Traffic Oscillations on Freeway Safety
Oregon Transportation Research and Education Consortium, PI on subcontract (Lead PI: Christopher Monsere (Portland State Univ.)), 10/2007-07/2009, $60,000 (Ahn: $30,298) - Assessment and Refinement of Real-Time Travel Time Algorithms for Use in Practice, Phase II
Oregon Transportation Research and Education Consortium, PI on subcontract (Lead PI: Kristin Tufte (Portland State Univ.)), 10/2007-09/2008, $57,907 (Ahn: $12,209) - Characteristics of Transitions in Freeway Traffic
Oregon Transportation Research and Education Consortium, PI on subcontract (Lead PI: Robert Bertini (Portland State Univ.)), 12/2006-08/2008, $53,208 (Ahn: $36,256)
Mid-America Freight Coalition (MAFC) Projects
- MAFC 24: Analysis of Surface Transportation Board Waybill Data for Freight Planning and Operations (2020)
- MAFC 23: OSOW Support for MAASTO SCOHT and MCC (report without appendices) (2019)
- MAFC 23 Appendices: OSOW Support for MAASTO SCOHT and MCC (Appendices and cover)
- MAFC 22: Quantifying the Value of Multimodal Freight Investments (2019)
- MAFC 21: Identification of Urban Truck Parking Locations in the MAASTO Region (2019)
- MAFC 20: Freight Data Inventory and Training (2019)
- MAFC 19: Assessment of Multimodal (Marine and Highway) Bottlenecks in the MAASTO Region 2018-2019
- MAFC 19 Appendix B: Assessment of Multimodal Bottlenecks: Time-Space Diagram for Corridors (Appendix B)
- MAFC 17: Truck Platooning Report (2018)
- MAFC 18: Identification and Characterization of the MAASTO Region’s Multimodal Freight Network (2018)