Journal
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT
Volume 53, Issue -, Pages 17-36Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.trd.2017.03.014
Keywords
Export container; Green port; Yard tractor; Queuing theory; Emissions
Funding
- National Natural Science Foundation of China [71671110, 51409157, 61304203]
- Young Scholar Program of Humanities and Social Science of the Ministry of Education of China [14YJC630008]
- Shanghai Natural Science Foundation [12ZR1444800]
- Lloyd's Register Foundation
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CO2 emission generated by yard tractors at container terminals have been proven to be one of the main sources of pollution from maritime transportation. This paper aims to offer a method for evaluating the emissions from yard tractors during loading. First, an assignment model of export containers is built to capture the behavior of tractor arrivals at each block when the loading begins and the queuing theory is used to model the congestion happening in the yard. Second, emissions from yard tractors are evaluated based on the forecast arrivals. The emissions are categorized into two types: one from those tractors which are moving at normal speed and the other from those tractors sitting in traffic jam or at the stop-and-go state. Terminals with different calls and diversified storage utilization are simulated to show the performance of the proposed method and identify potential measures for traffic management aiming to reduce transport emissions. It is shown that the emissions from the yard tractors are closely related to the location of export containers and should be a main concern in operating a busy terminal. (C) 2017 Elsevier Ltd. All rights reserved.
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