Environmental Life-cycle Assessment of Los Angeles Metro’s Orange Bus Rapid Transit and Gold Light Rail Transit Lines

Posted by Filippe Frigo
Contact: 
Mikhail Chester Assistant Professor, Civil, Environmental, and Sustainability Engineering Affiliate Faculty, School of Sustainability Arizona State University mchester@asu.edu
Type: 
Full LCA not available on the web
Comparative: 
yes
Publication year: 
2012
Language: 
English
Code: 
Energy
Code: 
Vehicles/Fuels
Product: 
Transport
Quality and sources
Is the study a: 
Detailed LCA
Was a critical review performed?: 
Yes
Practitioner(s): 
Center for Earth Systems Engineering and Management
Practitioner(s): 
Arizona State University
Practitioner(s) type: 
Institut/Technical research center
Summary
Functional unit: 
PMT
Goal and scope of the summary: 
In this study, the life cycle assessment framework is used to evaluate energy inputs and emissions of greenhouse gases, particulate matter (10 and 2.5 microns), sulfur dioxide, nitrogen oxides, volatile organic compounds, and carbon monoxide. For the Orange line, Gold line, and competing automobile trip, an analysis system boundary that includes vehicle, infrastructure, and energy production components is specified. Life cycle energy use and emissions inventories are developed for each mode considering direct (vehicle operation), ancillary (non-vehicle operation including vehicle maintenance, infrastructure construction, infrastructure operation, etc.), and supply chain processes and services. In addition to greenhouse gas emissions, the inventories are linked to their potential for respiratory impacts and smog formation, and the time it takes to payback in the lifetime of each transit system.
*The interest to reduce GHS is the same in any part of the life.

*LRT have a potential to become almost GHG-free in long term, since we can change the way we produce electricity to low-emissions technologies. 



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