TSRC

Local Governments Strategies to Improve Shared Micromobility Infrastructure

Shaheen, Susan
Martin, Elliot
Cohen, Adam
2024

This brief explores how shared micromobility (bikesharing and scooter sharing) has evolved since the pandemic. Primary data for this report were collected through four surveys: An Operator Survey (n=25) and an Agency Survey (n=52) distributed between January 2022 and May 2022 to all known shared micromobility operators and agencies and included questions about the attributes of shared micromobility systems1 operating within those agency jurisdictions and operator markets; and a similar Operator Survey (n=29) and an Agency Survey (n=52) distributed between January 2023 and June 2023 to all...

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...

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

Shaheen, Susan
Wright, John
Sperling, Daniel
2002

To reduce transportation emissions and energy consumption, policymakers typically employ one of two approaches—changing technology or changing behavior. These strategies include demand management tools, such as ridesharing and vehicle control technologies—cleaner fuels and fueleconomy. 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. Station cars are vehicles used by transit riders at the start or end of a trip. In 1990, the...

Innovative Mobility Services & Technologies: A Pathway Towards Transit Flexibility, Convenience, and Choice

Shaheen, Susan A.
2012

The number of senior citizens is expected to double by the year 2020, representing 18% of the nation’s population. After age 75, driving performance begins to decline due to changes in health and medication effects. Indeed, one quarter of seniors over 75 are expected to require alternative transportation services in the future. This chapter examines transit and innovative mobility options to better meet the needs of the growing older population in the near (2011) and more distant (2021) future. Barriers to transit use among older adults include anxiety and confusion about using transit;...

Urban Air Mobility: Opportunities and Obstacles

Cohen, Adam
Shaheen, Susan
2021

Urban Air Mobility (UAM, also known as advanced air mobility) is an emerging concept that envisions a safe, sustainable, affordable, and accessible air transportation system for emergency management, cargo delivery, and passenger mobility within or traversing a metropolitan area. While numerous societal concerns have been raised about these approaches (e.g., privacy, safety, security, social equity), on-demand aviation has the potential to provide options for emergency services, goods delivery, and passenger mobility in urban and rural areas using small piloted and autonomous aircraft....

Mobility on Demand (MOD) Sandbox Demonstrations Independent Evaluation (IE) - Los Angeles County and Puget Sound MOD First and Last Mile Partnership with Via Evaluation Plan

Cordahi, Gustave
Shaheen, Susan
Martin, Elliot
Hoffman-Stapleton, Mikaela
2018

The Mobility on Demand (MOD) Sandbox Demonstration Program provides a venue through which integrated MOD concepts and solutions – supported through local partnerships – are demonstrated in real-world settings. For each of the 11 MOD Sandbox Demonstration projects, the MOD Sandbox Independent Evaluation includes an analysis of project impacts from performance measures provided by the project partners, as well as an assessment of the business models used. This report constitutes the Evaluation Plan for the Los Angeles County and Puget Sound MOD First and Last Mile Partnership Demonstration...

Understanding Travel Behavior: Research Scan

Martin, Elliot
Shaheen, Susan, PhD
Zohdy, Ismail
2016

Travel behavior is undergoing a period of significant change in the United States, and this change is beginning to reveal itself in long-standing measures of transportation. While the United States is still heavily dependent on the personal automobile for mobility, changes in technology, demographics, economics, and attitudes are transforming how mobility is attained. At the same time, advances in information technology are opening new ways for transportation activity to be measured more comprehensively. These transformative trends are reshaping how we think about transportation policy,...

Transportation Network Companies Might Be Pulling Riders from Public Transit, but This Could Change

Shaheen, Susan, PhD
Martin, Elliot, PhD
Stocker, Adam
2023

Transportation Network Companies (TNCs, also known as ridehailing and ridesourcing) have expanded across California over the past decade and changed the way people travel. Using a smartphone, travelers can quickly summon a vehicle from almost anywhere and know what the estimated wait time, travel time, and cost will be before stepping into the vehicle. While TNCs are clearly addressing an unmet need for travelers, their growing popularity has raised a number of policy questions, including if TNCs are shifting people away from public transit and other travel modes (e.g., carshare, walking,...

Leveraging the Sharing Economy to Expand Shelter and Transportation Resources in California Evacuations

Wong, Stephen
Shaheen, Susan
2019

In 2017 and 2018, California was severely impacted by a number of devastating wildfires that required thousands of people to evacuate. These evacuations were hampered by poor communication, traffic congestion, and transportation and shelter resource deficiencies. To ensure that all citizens have both transportation and shelter in evacuations, agencies must consider alternative strategies for expanding resources, such as leveraging the sharing economy. To understand the possibility of leveraging the sharing economy to provide housing and transportation in an evacuation, researchers at the...

A Short History of Carsharing in the 90's

Shaheen, Susan A.
Sperling, Daniel
Wagner, Conrad
1999

From: A Short History of Carsharing in the 90's. Journal of World Transport Policy & Practice 5 (3), 18 - 40 The vast majority of automobile trips in U.S. metropolitan regions are drive-alone car trips. In 1990, approximately 90 percent of work trips and 58 percent of nonwork trips in the United States were made by vehicles with only one occupant (United States Department of Transportation, 1995). Vehicles are unused an average of 23 hours per day. This form of transportation is expensive and consumes large amounts of land. Private vehicles are attractive. Their universal appeal is...