Analysis of the Relationship between Vehicles Behavior and the Channelizing Devices at the Work Zone of Expressway

Abstract

 This research analyzed relationship between the vehicles behavior and the arrangement of channelizing devices using possibility index for collision with urgent deceleration (PICUD). As a result, it has been understood that heavy traffic makes the situation more dangerous in potential. It is obtained as a finding that when the inner lane is restricted, the danger of the lane-changing cars rise, and when the outer lane is restricted, the danger of the following car of the lane-changing cars. Moreover, regardless of the restricted lane, the concentration of minimum value of PICUD was confirmed in the point where the channelizing devices had begun to be arranged in the lane. In addition, the vehicles behavior under the situation of another arrangement of channelizing devices was compared with that under present situation. The results showed the possibility with the improvement effect from the viewpoint of potential rear-end collision danger when the transition area was emphasized visually.