Optimization Of Transit Bus Fleet'S Life Cycle Assessment Impacts With Alternative Fuel Options

Keywords

Air pollutant related health and environmental damage cost; CO emission mitigation 2; Environmental-life cycle assessment; Life cycle cost; Multi objective linear programming; Transit bus

Abstract

Public transportation is one of the most promising transportation modes to reduce the environmental emissions of the transportation sector in the U.S. In order to mitigate the environmental impacts brought by the transit bus system, new energy buses are introduced into the vehicle market. The goal of this study is to find an optimal bus fleet combination for different driving conditions to minimize life cycle cost, greenhouse gas emissions, and conventional air pollutant emission impacts. For this purpose, a Multi-Objective Linear Programming approach is used to select the optimum bus fleet combinations. Given different weight scenarios, this method could effectively provide solutions for decision makers with various budget constraints or emission reduction requirements. The results indicate that in heavily congested driving cycles such as the Manhattan area, the battery electric bus is the dominant vehicle type, while the hybrid bus has more balanced performances in most scenarios because of its lower initial investment comparing to battery electric buses. Petroleum powered buses have seldom been selected by the model. The trade-off analysis shows that the overall greenhouse gas impact performance is sensitive to the life cycle cost after certain points, which could provide valuable information for the bus fleet combination planning.

Publication Date

12-15-2015

Publication Title

Energy

Volume

93

Number of Pages

323-334

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.energy.2015.09.018

Socpus ID

84949646539 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84949646539

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