| Autor: |
Hatem Abou-Senna, Essam Radwan, Hesham Eldeeb |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Journal of Traffic and Transportation Engineering (English ed. Online), Vol 8, Iss 5, Pp 735-750 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2095-7564 |
| DOI: |
10.1016/j.jtte.2020.06.001 |
| Popis: |
The flashing yellow arrow (FYA) signal display creates an opportunity to enhance the left-turn phase with a variable mode that can be changed on demand. This research develops an integrated general purpose data collection module that time stamps detector and phase state changes within a National Electrical Manufacturers Association (NEMA) actuated traffic signal controller to provide recommendations for the flashing yellow arrow left-turn mode on a cycle-by-cycle basis. 115 left-turn approaches at 38 intersections with locations across the State of Florida were analyzed totaling 1370 h of video data processed including off-peak and peak conditions. Video data extraction was an essential step in developing the gap thresholds for the permissive left-turn. Actual intersection field data were obtained through loop detector mapping to the controller in the lab in real-time mode using a peer-to-peer logic environment. A custom communications software was developed to retrieve instantaneous channel input data, synchronize opposing through green phase, analyze traffic information, provide the algorithm decision, and generate a real-time log recording the events to determine whether it would be optimal to switch the red arrow to a flashing yellow arrow. The algorithm determines the time interval between the successive arrivals of vehicles and computes the corresponding headway for each lane by cycle on a second-by-second basis. Peer-to-peer logic is a necessary step to verify and validate new traffic concepts prior to field-testing and offers the advantage of acquiring and analyzing real-time traffic data coupled with video feed with the benefit of a safe environment. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
