Curbside Management

Staging at the Curb: Evaluating the impacts of shared automated vehicle fleet operations under curb usage restrictions

Younghun Bahk, Michael Hyland, Susan Shaheen, Brooke Wolfe, Adam Cohen
2026

Shared automated vehicle (SAV) ridehailing services are now operating in several metropolitan regions in the United States. While providing benefits, SAV services may exacerbate issues related to curb usage and vehicle kilometers traveled (VKT) in urban areas. The objective of this study is to provide guidance to cities by evaluating the impacts of SAVs’ short-term curb usage for staging between serving ride requests, under different curb restrictions and SAV operational strategies. We focus on the following performance metrics: VKT, curb productivity, customer wait time, and...

Going My Way? Understanding Curb Management and Incentive Policies to Increase Pooling Service Use and Public Transit Linkages in the San Francisco Bay Area

Wesley Darling, Jacquelyn Broader, Adam Cohen, Susan Shaheen
2023

Despite lower user costs, only 20% to 40% of transportation network company (TNC) us-ers select a pooled, or shared, ride option. Why are existing TNC users not selecting the pooled option or using TNCs to connect to public transit, and what role do built environment features and incentives play in their decision? This study explores the factors that influence TNC user decisions through a multi-method approach comprising photovoice small group discussions and a workshop. Between...

Creative Reallocation of Curbs, Streets, Sidewalks Accelerated by the Pandemic May be Here to Stay

Susan Shaheen, Adam Cohen, Jacquelyn Broader
2023

Curb space has been traditionally designed for private vehicle parking, public transit, and passenger and commercial loading. However, in recent years, a growing number of newservices and activities have increased the demand for limited curb space, including passenger pick-up and drop-off; last-mile delivery (e.g., courier network services, personal delivery devices); electric vehicle (EV) charging; micromobility parking and use (e.g., personally owned and shared bikes and scooters); and carsharing services. The curb serves a variety of functions such as vehicle and device storage (...

Understanding Curb Management and Targeted Incentive Policies to Increase Transportation Network Company Pooling and Public Transit Linkages

Susan Shaheen, Wesley Darling, Jacquelyn Broader, Adam Cohen
2021

Transportation network company (TNCs) rides that are shared amongst users (i.e., pooled) can offer a variety of benefits including increased mobility and reduced transportation emissions. However, very few TNC users select pooled trips and not all pooled rides are matched with other riders. This report supports increased poolingby exploring different pooling strategies and incentives. TNC userswere actively engagedto offer insightsthrough the...