title: The impact of vessel speed reduction on port accidents.
abstract: Reduced-speed zones (RSZs) have been designated across the world to control emissions from ships and prevent mammal strikes. While some studies have examined the effectiveness of speed reduction on emissions and mammal preservation, few have analyzed the effects of reduced ship speed on vessel safety. Those few studies have not yet measured the relationship between vessel speed and accidents by using real accident data. To fill this gap in the literature, this study estimates the impact of vessel speed reduction on vessel damages, casualties and frequency of vessel accidents. Accidents in RSZ ports were compared to non-RSZ ports by using U.S. Coast Guard data to capture the speed reduction effects. The results show that speed reduction influenced accident frequency as a result of two factors, the fuel price and the RSZ designation. Every $10 increase in the fuel price led to a 10.3% decrease in the number of accidents, and the RSZ designation reduced vessel accidents by 47.9%. However, the results do not clarify the exact impact of speed reduction on accident casualty.
authors.affiliation: Graduate School of Logistics, Inha University, Inha Road 100, Nam-gu, Incheon 402-751, Republic of Korea. Electronic address: ytchang@inha.ac.kr.
authors.forename: Young-Tae
authors.initials: YT
authors.lastname: Chang
authors.affiliation: Graduate School of Logistics, Inha University, Inha Road 100, Nam-gu, Incheon 402-751, Republic of Korea.
authors.forename: Hyosoo
authors.initials: H
authors.lastname: Park
mesh_terms: D000056:Accident Prevention / Q000191:economics / Q000379:methods*; D000059:Accidents / Q000706:statistics & numerical data*; D003132:Commerce; D006801:Humans; D015397:Program Evaluation; D012767:Ships; D014186:Transportation / Q000191:economics; D014481:United States
keywords: Panel negative binomial regression; Reduced speed zone; Vessel speed reduction; Zero-inflated negative binomial regression