Concepedia

Gregory D. Erhardt

GD

12

Publications

1K

Citations

12

H-Index

2003

Active since

Affiliations

University of Kentucky(Current)

San Francisco County Transportation Authority

University of California, Los Angeles

Connecticut Department of Transportation

University of Tennessee at Knoxville

Gregory D. Erhardt is an author at University of Kentucky specializing in engineering, business, and transportation engineering.

Top concepts

EngineeringBusinessTransportation EngineeringLogisticsData ScienceUrban PlanningPredictive AnalyticsTransportation PolicyStatisticsForecasting

Publications per year

2003–2022

12

Publications

12

Do transportation network companies decrease or increase congestion?

Gregory D. Erhardt, Sneha Roy, Drew Cooper et al. · Science Advances · 2019 · 448 citations · Full text

Transportation Planning, Congestion Management, Engineering +12

Why has public transit ridership declined in the United States?

Gregory D. Erhardt, Jawad Mahmud Hoque, Vedant Goyal et al. · Transportation Research Part A Policy and Practice · 2022 · 122 citations · Full text

Understanding the Recent Transit Ridership Decline in Major US Cities: Service Cuts or Emerging Modes?

Michael Graehler, Richard Alexander Mucci, Gregory D. Erhardt · Transportation Research Board 98th Annual MeetingTransportation Research Board · 2019 · 110 citations

Public Transport, Public Policy, Economics +12

Do transportation network companies increase or decrease transit ridership? Empirical evidence from San Francisco

Gregory D. Erhardt, Richard Alexander Mucci, Drew Cooper et al. · Transportation · 2021 · 88 citations · Full text

Engineering, Decrease Transit Ridership, Transportation Policy +17

The impacts of shared e-scooters on bus ridership

Abubakr Ziedan, Wesley Darling, Candace Brakewood et al. · Transportation Research Part A Policy and Practice · 2021 · 63 citations

Public Transport, Social Impact, Logistics +3

Rows per page

1–5 of 12