In this study, we aimed to improve maritime traffic safety by focusing on the problems of approach and navigation between ships in traffic separation lane routes (Uraga Suido Traffic Route, Akashi Kaikyo Traffic Route, Bisan Seto East Traffic Route) under the Maritime Traffic Safety Act, and aimed to make new proposals by grasping the current situation and pointing out the problems.
For this purpose, the approach limit of distances for vessels navigating in front of and behind their own ship, left and right, were investigated by means of a questionnaire. The results showed that the values of the approach distance required by vessels in the separated traffic lane were smaller than those in other routes, and the ratio of each direction showed that the limit distance in the front-rear area was almost three times that in the left-right area, which is different from previous studies and characteristic of separated traffic lane routes.
