Managing Traffic Through Highway Work Zones: Role of ITS
This research investigated the role of intelligent transportation system (ITS) technologies for improving safety of road users as well as workers and for enhancing efficiency of traffic flow in highway work zones. The scope of the project covered methodological innovations and ITS-based concept designs. This research was carried out in a simulation test bed. The study methodology consisted of the following steps. (1) Work zone configuration and characteristics were defined. These were based on Ontario Traffic Book 7 (Temporary Conditions) and geometric design guidelines. (2) Issues of road user and worker safety and road user mobility were defined. (3) Potential solutions based on ITS technologies were identified. (4) For testing ITS-based solutions, a simulation test bed was required. For this purpose, a microsimulator, namely VISSIM, was selected which is capable to taking into account driver behaviour regarding vehicle-following and lane changing movements. Also, this software enables ITS technologies to be looped-in as a part of simulation. The microsimulator was calibrated and validated. Selected work zone configurations were coded in the simulator. Merge options, speed profiles and queueing were investigated by using the simulator. Also, the simulator was applied to generate data for use in the development of models with the capability to predict average speed and queueing of traffic. (5) From simulator-generated data, Artificial Neural Network Models were trained and validated. (6) The concept design of an automated work zone information and traffic management system (AWITMS) was developed which integrates artificial neural network (ANN) models and intelligent transportation system (ITS) technologies. (7) The AWITMS was operated in the simulation test bed. On the basis of the results achieved, conclusions are drawn on the potential of ITS-based methods to enhance safety and mobility in highway work zones. Also, merits of the development and use of simulation test bed for the investigation of the applications of ITS in highway work zones are highlighted.
Ontario Ministry of Transportation1201 Wilson Avenue
Downsview, Ontario Canada M3M 1J8
- KHAN, AM
- Publication Date: 2007
- Pagination: 1 v., 25p.
- TRT Terms: Construction sites; Intelligent transportation systems; Simulation; Speed limits; Traffic control; Traffic lanes; Variable message signs
- Uncontrolled Terms: Guidance
- Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;
- Accession Number: 01149396
- Record Type: Publication
- Source Agency: Transportation Association of Canada (TAC)
- Files: TAC
- Created Date: Jan 28 2010 7:22AM