5月15日（金）にKentucky大学のGregory Erhardt准教授による講演会を下記のとおり実施いたします。

Location: The University of Tokyo, Hongo Campus Engineering Building 14, Room 802 (8F)/東京大学本郷キャンパス工学部14号館802室
Time: 15:00~17:00ほど

Short bio: 

Gregory Erhardt is a Raymond-Blythe Associate Professor of Civil Engineering at the University of Kentucky, a Hans Fischer Fellow at the Institute for Advanced Study, Technical University of Munich, and a Senior Advisor to Bay Area Metro. https://scholar.google.com/citations?user=B8CHHiEAAAAJ&hl=en

Topic: Pricing Ride-Hailing to Encourage Transit and Reduce Congestion

Past literature has explored the degree to which ride-hailing complements or competes with public transit. The evidence suggests that while individual trips sometimes do connect to transit or occur in areas or not well served by transit, ride-hailing trips are most concentrated in the densest parts of urban areas where transit service is good. The result is a shift from transit to ride-hailing, adding congestion to the roads that are most congested already.  This talk presents two studies exploring how we might counteract that effect through pricing.

The first evaluates Chicago’s Ground Transportation Tax (GTT) update of January 6, 2020, which increased fees on solo rides and all downtown ride-hailing between 6am and 10pm. Using a novel policy-sensitive direct ridership model estimated on open data before and after the GTT update, we measure the effect of the pricing change on ride-hailing volume, mode choice, and ride-sharing behavior across Chicago census tracts.

The second study proposes and evaluates a net-zero pricing scheme in which per-trip taxes on transit-competitive rides are used to cross-subsidize rides that serve areas or times with limited transit access. Applied over a full day, the scheme diminishes transit competition, mitigates congestion, and reduces passenger cost, providing the potential to shift ride-hailing from transit competitor to complement.

The first study was co-authored with Richard Alexander Mucci at the University of Kentucky, and the second with Zhihua Jin, Rolf Moeckel and Allister Loder at Technical University of Munich.

なお、冒頭の1時間ほど、Erhardt教授による講演を行った後、本研究室所属の学生によるプレゼンテーション（各30分程度）を予定しております

• 植村洋史（D3）：Optimizing Station Location and Fleet Size for Shared Micromobility Services: A Case Study in Japanese Cities
• Jakob Rehmann（VR）：Equity Impacts of Demand-Responsive Transport for the Elderly Population in Gunma: A Person-Based Accessibility Approach in MATSim

ご参加を希望の方は羅（lichen.l@ut.t.u-tokyo.ac.jp）までご連絡をいただけますと幸いです。