A database containing 160 incidents collected from the Central Expressway (CTE) in Singapore was analysed. It was found that the traffic flow and occupancy conditions prior to an incident occurrence were useful information for explaining the variation in incident-induced traffic disturbances. An analysis of these traffic disturbances also revealed that the traffic parameters (speed, occupancy and flow) did not respond to the occurrence of an incident simultaneously. In addition, the magnitude of change in these variables varied according to the prevailing traffic conditions prior to the occurrence of an incident. These empirical findings suggested that detection algorithms might yield improved performance if more variables (in addition to the typical use of traffic occupancy) as well as information on the prevailing traffic conditions were incorporated into the detection framework. (Author/publisher) For the covering entry of this conference, please see ITRD abstract no. E208431.
Abstract