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Title: Modeling perceived collision risk in port water navigation
Authors: Chin, H.C. 
Debnath, A.K. 
Keywords: Automatic radar plotting aid
Collision risk perception
Harbor pilot
Ordered regression model
Port navigation safety
Issue Date: Dec-2009
Citation: Chin, H.C., Debnath, A.K. (2009-12). Modeling perceived collision risk in port water navigation. Safety Science 47 (10) : 1410-1416. ScholarBank@NUS Repository.
Abstract: An increase in the likelihood of navigational collisions in port waters has put focus on the collision avoidance process in port traffic safety. The most widely used on-board collision-avoidance system is the automatic radar plotting aid which is a passive warning system that triggers an alert based on the pilot's pre-defined indicators of distance and time proximities at the closest point of approaches in encounters with nearby vessels. To better help pilot in decision making in close quarter situations, collision risk should be considered as a continuous monotonic function of the proximities and risk perception should be considered probabilistically. This paper derives an ordered probit regression model to study perceived collision risks. To illustrate the procedure, the risks perceived by Singapore port pilots were obtained to calibrate the regression model. The results demonstrate that a framework based on the probabilistic risk assessment model can be used to give a better understanding of collision risk and to define a more appropriate level of evasive actions. © 2009 Elsevier Ltd. All rights reserved.
Source Title: Safety Science
ISSN: 09257535
DOI: 10.1016/j.ssci.2009.04.004
Appears in Collections:Staff Publications

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