TSRC

Vehicle Electrification in Carsharing and Transportation Network Company (TNC) Fleets: Current and Future Trends

Shaheen, Susan
Farrar, Emily
2022

This chapter focuses on two shared mobility modes — carsharing and transportation network companies (TNCs, also known as ridesourcing and ride-hailing) — and how they can incorporate electric vehicles (EVs) into their fleets. Shared mobility is the shared use of a vehicle, scooter, bicycle, or other travel mode; it provides users with short-term access to a travel mode on an as-needed basis. Carsharing (e.g., Zipcar, car2go) offers members access to vehicles by joining an organization that provides and maintains a fleet of cars and/or light trucks. Vehicles may be located throughout a city...

Energy Efficiency - Innovations: Driving Prosperity, Slashing Emissions

Shaheen, Susan
Cohen, Adam
2020

In recent years, mobility on demand (MOD) is gaining popularity among mobility consumers. This innovative concept is based on the principle that transportation is a commodity where modes have economic values that are distinguishable in terms of cost, journey time, wait time, number of con-nections, convenience, and other attributes. MOD enables consumers to access mobility, goods and services on demand by dispatching or using shared mobility, ...

Planning for Shared Mobility

Cohen, Adam
Shaheen, Susan
2018

In recent years, economic, environmental, and social forces have quickly given rise to the “sharing economy,” a collective of entrepreneurs and consumers leveraging technology to share resources, save money, and generate capital. Homesharing services, such as Airbnb, and peer-to-peer carsharing services, such as Getaround, have become part of a sociodemographic trend that has pushed the sharing economy from the fringe and more to the mainstream. The role of shared mobility in the broader landscape of urban mobility has become a frequent topic of discussion. Major shared transportation...

Framework for Testing Innovative Transportation Solutions: Case Study of Carlink, a Commuter Carsharing Program

Shaheen, Susan A.
Novick, Linda
2005

Transit accounts for just two percent of total travel in the U.S. One reason for low ridership is limited access; many individuals either live or work too far from a transit station. In developing transit connectivity solutions, researchers often employ a range of study instruments, such asstated-preference surveys, focus groups, and pilot programs. To better understand response to one innovative transit solution, the authors employed a number of research tools, including: a longitudinal survey, field test, and pilot program. The innovation examined was a commutercarsharing model, called...

Fleeing from Hurricane Irma: Empirical Analysis of Evacuation Behavior Using Discrete Choice Theory

Wong, Steven D.
Pel, Adam J.
Shaheen, Susan A.
2020

This paper analyzes the observed decision-making behavior of a sample of individuals impacted by Hurricane Irmain2017(n = 645) by applying advanced methods based in discrete choice theory. Our first contribution is identifyingpopulation segments with distinct behavior by constructinga latent class choice model for the choice whether to evacuate or not. We find two latent segments distinguished by demographics and risk perception that tend to be either evacuation-keen or evacuation-reluctant and respond differently to mandatory evacuation orders.Evacuees subsequently face a multi-...

Shared Micromobility: Policy, Practices, and Emerging Futures

Shaheen, Susan A.
Cohen, Adam
Broader, Jacquelyn
2022

Shared micromobility – or short-term access to shared bikes and scooters – provides a flexible alternative for households living in urban areas, households seeking first and last-mile connections to public transportation, and those without access to a private vehicle trying to access jobs and essential services. Up until the global pandemic, shared micromobility grew worldwide on a relatively steep growth curve, beginning in the early 2010s. Shared micro-mobility is a transportation strategy that enables users’ short-term access to a transportation mode on an as-needed basis (Shaheen et al...

Carsharing Continues to Gain Momentum

Shaheen, Susan A.
2006

With auto ownership and fuel costs rising, people everywhere are seeking alternatives to private vehicle ownership. Car-sharing (or short-term vehicle rentals) provides such an alternative through hourly rates and subscription-access plans, especially for individuals and businesses in major cities with good access to other transportation modes, such as transit and carpooling.The principle of car-sharing is simple: individuals gain the benefits of private vehicle use without the costs and responsibilities of owner- ship. People involved in this typically join an organization that...

CarLink—A Smart Carsharing System

Shaheen, Susan A.
1999

CarLink is the use of short-term rental vehicles and intelligent communication and reservation technologies to facilitate shared vehicle access at transit stations or other activity centers for making local trips. CarLink vehicles, owned and operated by a transit district or third-party service provider, can be used by different drivers at many locations throughout a day. Using advanced communication and reservation system technologies, they can be reserved in advance or rented automatically upon arrival at a CarLink...

Mobility on Demand in the United States

Shaheen, Susan A.
Cohen, Adam
2020

The growth of shared mobility services and enabling technologies, such as smartphone apps, is contributing to the commodification and aggregation of transportation services. This chapter reviews terms and definitions related to Mobility on Demand (MOD) and Mobility as a Service (MaaS), the mobility marketplace, stakeholders, and enablers. This chapter also reviews the U.S. Department of Transportation’s MOD Sandbox Program, including common opportunities and challenges, partnerships, and case studies for employing on-demand mobility pilots and programs. The chapter concludes with a...

Forecasting Truck Parking Using Fourier Transformations

Sadek, Bassel A.
Martin, Elliot W.
Shaheen, Susan A.
2020

Truck-based transportation is the predominant mode used to transport goods and raw materials within the United States. While trucks play a major role in local commerce, a significant portion of truck activity is also long haul in nature. Long-haul truck drivers are continuously faced with the problem of not being able to secure a safe parking spot since many rest areas become fully occupied, and information about parking and availability is limited. Truck drivers faced with full parking lots/facilities either continue driving until a safe parking spot is located or park illegally....