Research Projects

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Research Projects

STATUS: Complete YEAR: 2019 TOPIC AREA: Connected and autonomous systems Sustainability, energy, and health CENTER: PSR

Modeling e-hailing and car-pooling services in a coupled morning-evening commute framework

Project Summary

Project number: PSR-19-10
Funding source: Caltrans
Contract number: 65A0674 TO 020
Funding amount: $200,642
Performance period: 1/1/2020 to 12/31/2020

Project description

In this research project, we develop a general equilibrium model to capture the complex interactions between solo-driving, rideshare and e-hailing that allows travelers to switch between different transportation modes in a coupled morning-evening commute. The model is formulated as a mixed complementarity problem. The existence of an equilibrium solution and the properties of the solution are investigated. The proposed model is then validated with a small network and the renowned Sioux-Falls network. The results show that our model captures the mode switches between morning and evening that is missed by decoupled morning and evening commute models. In particular, our numerical examples show that modeling morning and evening commutes separately tends to overestimate the number of drivers and total vehicle miles traveled (VMT) in the network when accounting for travelers' capabilities for mode switching. With a coupled model, transportation planners can better understand appropriate incentives to increase vehicle occupancy and reduce VMT, thereby achieving some social benefits associated with morning and evening commutes.


Jong-Shi Pang
Epstein Family Chair and Professor of Industrial and Systems Engineering
Olin Hall of Engineering, OHE 310C
3650 McClintock AveLos Angeles, CA 90089-0193
United States
[email protected]


Maged Dessouky
Dean's Professor and Chair, Daniel J. Epstein Department of Industrial and Systems Engineering
3715 McClintock Ave.
Ethel Percy Andrus Gerontology Center (GER) 206ALos Angeles, CA 90089-0193
United States
[email protected]

Michael Zhang
Professor, Department of Civil and Environmental Engineering
3145 Ghausi Hall
Davis, CA 95616
United States
[email protected]