1 Scopus citations


Environmental lifecycle assessment is important for assessing the greenhouse gas emissions of transportation systems. The Los Angeles County Metropolitan Transportation Authority (LA Metro) provides planning, funding, construction, and operation functions for all transportation systems in LA County. It approaches its environmental challenges holistically, integrating environmental lifecycle assessment into its sustainability practices to meet state and regional greenhouse gas policies. LA Metro's Orange bus rapid transit, Gold light rail transit, and Expo light rail transit lines were recently examined to illustrate the value of an environmental lifecycle assessment to major capital projects. Several lifecycle models were used to estimate how much greenhouse gas emissions are emitted and at what point in the lives of the respective systems. The results for the transit systems show how much lifecycle processes contribute to understanding greenhouse gas emissions of transportation systems.

Original languageEnglish (US)
Title of host publicationEngineering for Sustainable Communities
Subtitle of host publicationPrinciples and Practices
PublisherAmerican Society of Civil Engineers (ASCE)
Number of pages8
ISBN (Electronic)9780784480755
ISBN (Print)9780784414811
StatePublished - Jan 1 2017

ASJC Scopus subject areas

  • General Environmental Science
  • General Engineering


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