Gregory D. Erhardt - Concepedia

Author

Gregory D. Erhardt

University of Kentucky ORCID

Also Known As

Erhardt, Gregory D., G. Erhardt, Greg Erhardt, Gregory D. Erhardt, Gregory D. Erhardt, Gregory Erhardt

Publications

1.1K

Citations

H-Index

Concepts

All Affiliations

University of Kentucky San Francisco County Transportation Authority University of California, Los Angeles Connecticut Department of Transportation University of Tennessee at Knoxville

About

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

Top Concepts

#	Concept	H-Index	Publications	Citations
1	Engineering	8	8	761
2	Business	7	7	739
3	Data Science	5	5	181
4	Business Analytics	1	1	30
5	Civil Engineering	1	1	17

Gregory D. Erhardt

Publications

Citations

H-Index

Page 1

	Year	Citations
Do transportation network companies decrease or increase congestion? Gregory D. Erhardt, Sneha Roy, Drew Cooper, Science Advances Transportation PlanningCongestion ManagementEngineeringSmart CityTraffic Congestion	2019	448
Why has public transit ridership declined in the United States? Gregory D. Erhardt, Jawad Mahmud Hoque, Vedant Goyal, Transportation Research Part A Policy and Practice	2022	122
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 Public TransportPublic PolicyEconomicsEngineeringSocial Impact	2019	110
Do transportation network companies increase or decrease transit ridership? Empirical evidence from San Francisco Gregory D. Erhardt, Richard Alexander Mucci, Drew Cooper, Transportation EngineeringDecrease Transit RidershipTransportation PolicySan FranciscoOn-demand Transport	2021	88
The impacts of shared e-scooters on bus ridership Abubakr Ziedan, Wesley Darling, Candace Brakewood, Transportation Research Part A Policy and Practice Public TransportSocial ImpactLogisticsBus RidershipMobility Service	2021	63
Why is traffic congestion getting worse? A decomposition of the contributors to growing congestion in San Francisco-Determining the Role of TNCs Sneha Roy, Drew Cooper, Alex Mucci, Case Studies on Transport Policy Traffic TheoryTraffic FlowSan Francisco-determiningTraffic PredictionTraffic Congestion	2020	38
Evaluating the Ability of Transit Direct Ridership Models to Forecast Medium-Term Ridership Changes: Evidence from San Francisco Richard Alexander Mucci, Gregory D. Erhardt Transportation Research Record Journal of the Transportation Research Board EngineeringRail RidershipBusiness AnalyticsTransportation PolicySan Francisco	2018	30
Ohio Long-Distance Travel Model Gregory D. Erhardt, Joel Freedman, Andrew Stryker, Transportation Research Record Journal of the Transportation Research Board Transport Network AnalysisEngineeringTravel BehaviorOperations ResearchData Science	2007	26
The changing accuracy of traffic forecasts Jawad Mahmud Hoque, Gregory D. Erhardt, David R. Schmitt, Transportation EngineeringTraffic PredictionPredictive AnalyticsTraffic ModelTraffic Forecasts	2021	22
Estimating the uncertainty of traffic forecasts from their historical accuracy Jawad Mahmud Hoque, Gregory D. Erhardt, David R. Schmitt, Transportation Research Part A Policy and Practice Forecasting MethodologyEngineeringUncertain DataUncertainty ModelingProbabilistic Forecasting	2021	20

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