Loading...

Modelling of queue length in freeway work zones – case study karaj-tehran freeway

Mousazadeh Gilandeh , M ; Sharif University of Technology | 2021

228 Viewed
  1. Type of Document: Article
  2. DOI: 10.7307/ptt.v33i1.3582
  3. Publisher: Faculty of Transport and Traffic Engineering , 2021
  4. Abstract:
  5. In this study, the traffic parameters were collected from three work zones in Iran in order to evaluate the queue length in the work zones. The work zones were observed at peak and non-peak hours. The results showed that abrupt changes in Freeway Free Speed (FFS) and arrival flow rate caused shockwaves and created a bot-tleneck in that section of the freeway. In addition, accel-eration reduction, abrupt change in the shockwave speed, abrupt change in the arrival flow rate and increase in the percentage of heavy vehicles have led to extreme queue lengths and delay. It has been found that using daily traffic data for scheduling the maintenance and rehabilita-tion projects could diminish the queue length and delay. Also, by determining the bypass for heavy vehicles, the delay can be significantly reduced; by more than three times. Finally, three models have been presented for estimating the queue length in freeway work zones. More-over, the procedure shown for creating a queue length model can be used for similar freeways. © 2021, Faculty of Transport and Traffic Engineering. All rights reserved
  6. Keywords:
  7. Arrival time ; Maintenance ; Motorway ; Numerical model ; Parameter estimation ; Project assessment ; Traffic management ; Iran
  8. Source: Promet - Traffic - Traffico ; Volume 33, Issue 1 , 2021 , Pages 49-59 ; 03535320 (ISSN)
  9. URL: https://traffic.fpz.hr/index.php/PROMTT/article/view/3582