PROJECT TITLE :

The Effects of Vehicle-to-Infrastructure Communication Reliability on Performance of Signalized Intersection Traffic Control

ABSTRACT:

Communications between vehicles and roadside infrastructure can give an intersection controller information about the location and speed of any connected vehicles. Recent years have seen a surge in research interest directed toward the development of adaptive intersection control algorithms that make use of the aforementioned information. These studies almost always assume that communications are flawless. This study investigates the potential effects that a temporary decrease in the dependability of the communication channel could have on the throughput of the intersection. Vissim and OMNeT++ are the simulation tools that are used to model road traffic and DSRC-VANET communications, respectively. Both of these simulations are integrated into a single system. When compared to simulations of scenarios with perfect communication conditions, those with challenging but realistic communication distortions conditions show significantly longer average delays for vehicles. These additional delays occur regardless of whether or not all of the intersection approaches are impacted by the communication distortions because of their large degree of independence. In addition to this, delays do not increase in the same manner across all signal groups. They might even go down for some people, which would result in an unfair distribution of green times. The control could be adjusted to compensate for the lost communications by using the data collected during the time intervals that came before it along with some straightforward hypotheses regarding the movement of the vehicle. Because of this adjustment, wait times are reduced across the board, including at disconnected as well as connected intersections. When the communication distortions are distributed uniformly across all intersection approaches, it performs in a manner that is comparable to the scenario in which perfect communications are present. The findings, taken as a whole, provide conclusive evidence that the influence of communication distortions ought to be taken into account in the process of developing adaptive intersection control algorithms.