Shared Mobility

Advanced Information Techniques And Paratransit Services To Enhance Mobility Of Elderly And Disabled Travelers

Chen, Wan-Hui
Klaver, Kelley
Uwaine, Rochelle
Jovanis, Paul P.
1998

This study focused on determining whether advanced transportation services and information systems could enhance the mobility of disabled and elderly travelers in their use of transit, paratransit, or advanced paratransit services. The advanced proposed systems included regular paratransit and two advanced paratransit systems (real-time paratransit and real-time ridesharing) and five transportation information systems: computer, television, operator-assisted telephone, automated telephone, and personal information systems.

Evaluation of UC Davis Long-Range Transportation, Land-Use, and Housing Plans: Examining the Potential for Innovative Mobility Pilot Projects

Finson, Rachel S.
Shaheen, Susan A.
2001

At present, the City of Davis, surrounding communities, and the UC Davis campus are struggling with many of the same transportation problems that plague larger urban centers including increasing traffic, limited parking, and challenges to effective operation of the public transit system. The campus is expecting to grow by 6,000 students in the next ten years (plus approximately 3,000 faculty and staff) and is developing a Long-Range Development Plan (LRDP) that will serve to guide this growth. This plan will include housing, traffic control, parking, alternative transportation modes, and...

Development Of User Needs And Functional Requirements For A Real-time Ridesharing System

Kowshik, Raghu
Gard, John
Loo, Jason
Jovanis, Paul P.
Kitamura, Ryiuichi
1993

This report documents the results of a user needs assessment conducted to define the concept of real-time ridesharing, and identify the problems that are to be addressed by the proposed Real-Time Rideshare Matching System. The user needs are then utilized to develop functional requirements for the real-time rideshare matching system. The functional requirements identify services that should be provided by the system, and the interfaces to be used to access the system.

Travel Effects of a Suburban Commuter Carsharing Service: CarLink Case Study

Shaheen, Susan A.
Rodier, Caroline J.
2005

Since 1998, carsharing programs (or short-term auto rentals) in the U.S. have experienced exponential membership growth. As of July 2003, 15 carsharing organizations collectively claimed 25,727 members and 784 vehicles. Given this growing demand, decision makers and transit operators are increasingly interested in understanding the potential for carsharing services to increase transit use, reduce auto ownership, and lower vehicle miles traveled. However, to date, there is only limited evidence of potential program effects in the U.S. and Europe. This paper presents the travel effects of...

Designing a Transit-Feeder System Using Bikesharing and Peer-to-Peer Ridesharing

Jayakrishnan, Jay
McNally, Michael G.
Gabriel Yu, Jiangbo
Nam, Daisik
Yang, Dingtong
An, Sunghi
2017

Peer-to-peer (P2P) ridesharing is a relatively new concept that aims at providing a sustainable method for transportation in urban areas. This research is on the second phase of a sequence of projects that follows the previously funded UCConnect project titled “Promoting Peer-toPeer Ridesharing Services as Transit System Feeders”. In this phase, the study constructs a multimodal network, which includes P2P ridesharing, transit and city bike-sharing. The research develops schemes to provide travel alternatives, routes and information across multiple modes in the network. In addition, we...

Testing Wildfire Evacuation Strategies and Coordination Plans for Wildland-Urban Interface (WUI) Communities in California

Soga, Kenichi, PhD
Comfort, Louise, PhD
Li, Pengshun
Zhao, Bingyu, PhD
Lorusso, Paola
2024

In the event of a wildfire, government agencies need to make quick, well-informed decisions to safely evacuate people. Small communities, such as in Marin County, with a mix of residences and flammable vegetation in Wildland-Urban Interface zones tend to lack resources to conduct evacuation studies. Consequently, this study uses a framework of wildfire and traffic simulations to test the performance of potential evacuation strategies, including reducing the volume of evacuating vehicles through car-pooling, phasing evacuations by staggering evacuation times by zone, and prohibiting street...

Assessing the Functionality of Transit and Shared Mobility Systems after Earthquakes

Soga, Kenichi, PhD
Comfort, Louise, PhD
Zhao, Bingyu, PhD
Tang, Yili (Kelly), PhD
Han, Tianyu
2024

Located within the seismically active Pacific Ring of Fire, California's transportation infrastructure, especially in the Bay Area, is susceptible to earthquakes. A review of current research and stakeholder interviews revealed a growing awareness of emergency preparedness among local jurisdictions and transit agencies in recent years. However, many have yet to formalize and publish their recovery plans. This study introduces an agent-based multimodal transportation simulation tool to enhance post-earthquake transportation resilience. Integrating a road network simulator with a metro...

Subsidizing Transportation Network Companies to Support Commutes by Rail

Darling, Wesley
Cassidy, Michael J., PhD
2024

We explore how rail transit’s first- and last-mile issue might be addressed by partnering with transportation network companies (TNCs) like Uber and Lyft. The goal is to lure high-income commuters to shift from cars to TNCs and rail. We also explore how rail and TNC partnerships can improve travel for low-income commuters who currently rely on low-frequency bus service. We parametrically test subsidizing TNC fares for feeder services in the San Francisco Bay Area in an idealized fashion. Inputs such as the residents’ value of time and vehicle ownership were taken from various local data...

To Pool or Not to Pool? Understanding the Time and Price Tradeoffs of OnDemand Ride Users – Opportunities, Challenges, and Social Equity Considerations for Policies to Promote Shared-Ride Services

Shaheen, Susan, PhD
Lazarus, Jessica
Caicedo, Juan
Bayen, Alexandre, PhD
2021

On-demand mobility services including transportation network companies (also known as ridesourcing and ridehailing) like Lyft and Uber are changing the way that people travel by providing dynamic mobility that can supplement public transit and personal-vehicle use. However, TNC services have been found to contribute to increasing vehicle mileage, traffic congestion, and greenhouse gas emissions. Pooling rides ⎯ sharing a vehicle by multiple passengers to complete journeys of similar origin and destination ⎯ can increase the average vehicle occupancy of TNC trips and thus mitigate some of...

“Don’t Keep Us Out of the Revolution!”: Accessibility and Autonomous Rideshare in California

Heuser, Katie L.
2024

Robotaxi services, or rideshare operated by autonomous vehicles, present an opportunity for independent and convenient transportation for people with disabilities. The proliferation of robotaxis in California has been met with mixed reactions from the disability community. To better understand perceptions of and expectations for robotaxis, this report uses semi-structured interviews with representatives from disability advocacy organizations. For many people with disabilities, especially for people with intellectual, developmental, and/or physical disabilities, robotaxis are inaccessible....