Examining Intelligent Transportation Technology Elements and Operational Methodologies for Shared-Use Vehicle Systems

Matt Barth, Michael Todd, Susan Shaheen, PhD

As an innovative mobility solution, there has been significant interest and activity in shared-use vehicle systems. Shared-use vehicle systems (i.e., carsharing, station cars) consist of a fleet of vehicles that are used by several different individuals throughout the day. Shared-use vehicles offer the convenience of a private automobile and more flexibility than public transportation alone. In recent years, varying degrees of intelligent transportation system technologies have been applied to shared-used systems, providing better manageability and customer service.

Carsharing in the United States: Examining Market Potential

Susan A. Shaheen, Ph.D.

The automobile is the dominant travel mode throughout the U.S., while transit accounts for less than four-percent of market share. Between these principal modes, niche markets exist for other transportation services, such as transit feeder shuttles and carsharing. Carsharing, in which individuals share a fleet of vehicles distributed at neighborhoods, employment sites, and/or transit stations, could potentially fill and expand one such niche; complement existing services; and develop into an economically viable transportation alternative.

Shared-Use Vehicle Systems: Framework for Classifying Carsharing, Station Cars, and Combined Approaches

Matt Barth and Susan Shaheen, PhD

In recent years, shared-use vehicle systems have garnered a great deal of interest and activity internationally as an innovative mobility solution. In general, shared-use vehicle systems consist of a fleet of vehicles that are used by several different individuals throughout the day. Shared-use vehicles offer the convenience of a private automobile and more flexibility than public transportation alone.

California’s Zero-Emission Vehicle Mandate – Linking Clean-Fuel Cars, Carsharing, and Station Car Strategies

Susan Shaheen, PhD, John Wright, and Daniel Sperling

To reduce transportation emissions and energy consumption, policy makers typically employ one of two approaches-changing technology or changing behavior. These strategies include demand management tools, such as ridesharing and vehicle control technologies that involve cleaner fuels and fuel economy. Despite the benefits of a combined policy approach, these strategies are normally employed separately. Nevertheless, they have been linked occasionally, for instance in the electric station car programs of the 1990s.

Davis Smart Mobility Model: Initial Scoping and Planning Study

Susan Shaheen, Ph.D, Rachel Finson

This report reflects an initial scoping that is intended to inform a broader multi-year project at the University of California, Davis. The University of California, Davis is addressing projected growth scenarios in its Long-Range Development Plan and is interested in innovative transportation projects that will increase the mobility of the University community while improving and sustaining high environmental and social standards in planning objectives.

Unsafe at Any Speed?: What the Literature Says About Low-Speed Modes

Caroline Rodier, Ph.D, Susan Shaheen, Ph.D, Stephanie Chung

The literature is reviewed on the safety of low-speed modes in the pedestrian environment, including walking, bicycling, skating, skateboarding, riding scooters, and operating wheelchairs, as part of a research and feasibility analysis of a pilot project that introduces shared Segway Human Transporters (HT), electric bikes, and bikes linked to a suburban Bay Area Rapid Transit (BART) District station and employment centers in Northern California.

U.S. Shared-Use Vehicle Survey Findings: Opportunities and Obstacles for Carsharing and Station Car Growth

usan Shaheen, PhD, Mollyanne Meyn, Kamill Wipyewski

Shared-use vehicle services provide members access to a vehicle fleet for use on an as-needed basis, without the hassles and costs of individual auto ownership. From June 2001 to July 2002, the authors surveyed 18 U.S. shared-use vehicle organizations on a range of topics, including organizational size, partnerships, pricing, costs, and technology. Although survey findings demonstrate a decline in the number of organizational starts in the last year, operational launches into new cities, membership, and fleet size continue to increase.

University of California, Davis Long-Range Development Plan: A Davis Smart Mobility Model

Susan Shaheen, Ph.D, Caroline Rodier, Rachel Finson

The goal of the Davis Smart Mobility Model project is to optimize individual mobility options through improved connectivity among modes, enhanced techniques to link land-use planning and transportation system design, advanced information technologies, and clean-fuel vehicles.

Carsharing and Carfree Housing: Predicted Travel, Emission, and Economic Benefits

Caroline Rodier, PhD and Susan Shaheen, PhD

In this paper, researchers present simulation findings from three innovative mobility scenarios (forecast to 2025) using an advanced regional travel demand model. This model was employed to approximate the effects of transit-based carsharing (short-term vehicle access linked to transit), real-time transit information services, and carfree housing (residential developments designed with limited parking provisions) in the Sacramento region. The scenarios are evaluated against travel, emission, and economic benefits criteria.

CarLink II: A Commuter Carsharing Pilot Program Final Report

Susan Shaheen, PhD, Kamill Wipyewski, Caroline Rodier, PhD, Linda Novick, Mollyane Meyn, and John Wright

CarLink II was a commuter-based carsharing pilot project administered by the Institute of Transportation Studies at the University of California, Davis (ITS-Davis) in conjunction with Caltrans, American Honda Motor Company, and Caltrain. California Partners for Advanced Transit and Highways (PATH) researchers conducted the evaluation. Pilot objectives included testing an advanced carsharing system, understanding user response to this service, and testing its long-term sustainability.