research report

Evaluation of Benefits and Costs of Truck Connected Eco-Driving Program on Urban Freight Corridors

Abstract

This research estimates the costs and benefits of implementing connected eco-driving technology for freight trucks on signalized freight corridors as a strategy to mitigate the impacts of truck traffic. The costs associated with enabling the technology include capital investment for infrastructure upgrades such as upgrading traffic controllers and installing communication modems. The costs also include operating costs for wireless data plans and computing servers. Over a period of 20 years, the total cost for one intersection is estimated to be $18,200. The benefits of the technology include reductions in energy consumption and emissions from a connected truck traveling on connected corridors. Under cold start conditions, the technology could help reduce overall fuel consumption by 20%, and emissions of carbon dioxide, nitrogen oxides, and particulate matter by 22%, 20%, and 15%, respectively. Under hot running conditions, the technology could help reduce overall fuel consumption by 10% and emissions of carbon dioxide, nitrogen oxides, and particulate matter by 10%, 0%, and 41%, respectively. Based on these estimates, connected eco-driving technology can play an important role in addressing greenhouse gas emissions from freight trucks, as well as mitigating the air quality and health impacts associated with truck emissions in communities that are heavily impacted by truck traffic.

research report

Strategies to Preserve Transit-accessible Affordable Housing in Southern California

Publication Date

August 1, 2023

Author(s)

Karen Chapple, Madeleine Parker, Yuju Park

Abstract

This report highlights risk and prioritization factors for housing developments with expiring affordability protections, focused on preserving transit-accessible affordable housing. It presents a regional framework for identifying and preserving subsidized affordable housing in the Southern California Association of Governments (SCAG) region (Los Angeles, Imperial, Orange, Riverside, San Bernardino, and Ventura counties). First, the research team analyzes data from the California Housing Partnership (CHPC) and the National Housing Preservation Database (NHPD) to understand risk factors for expiring housing units and design a prioritization tool for entities in the region to use when prioritizing developments to focus on preservation and anti-displacement efforts. Second, the team highlights affordable housing preservation policy solutions and characteristics unique to the Southern California context. Third, the research paper draws on the strategies and experiences of other jurisdictions in the United States with experience strategizing around affordable housing preservation efforts to present key lessons and takeaways.