Abstract
Unreliable transport systems cause variability of route travel time and lead to different route choice behaviours among three harbour crossings in Hong Kong. This paper conducts a comprehensive investigation of route choice behaviours over a series of consecutive days. Data analyses of route choice behaviours are based on one-month Automatic Vehicle Identification data which are collected from Autotoll transponders at toll plazas of three harbour-crossing tunnels. The results of the analyses show that the route choice behaviours vary significantly between commercial vehicles and private cars as well as spatial-temporal contexts. It was also found that the split of traffic flows among the three harbour crossings is not well balanced by time of day and day of week. Thus there is a need to consider differential tolling (i.e. tolling by time of day) by revamping the tolling arrangements of the three harbour-crossing tunnels traversing the Victoria Harbour in Hong Kong.
