Traffic Operation and Safety Analysis on an Arterial Highway: Implications for Connected Vehicle Technologies
This paper presents the results of operational and safety analysis of test bed corridor in which connected vehicle (CV) technologies are being implemented to allow for vehicle to infrastructure (V2I) and infrastructure to vehicle (I2V) connectivity. The study corridor is approximately 7.7 miles in length and is located in the City of Tallahassee, United States. The study corridor has a total of 22 signalized intersections that currently have roadside units (RSUs) installed for the purposes of broadcasting signal phase and timing (SPaT) and geometric description (MAP) information. The quantitative analysis of travel in the study corridor using traditional measures such as speed, travel time, level of service, and delay was conducted to establish benchmark prior to full implementation of CV applications. Qualitatively, the potential for crash reduction was examined by analyzing crash topology in the study corridor and estimating crash reduction that will occur once CV applications are fully deployed. The paper will discuss various basic safety messages that, once broadcasted, will enable drivers to increase their situational awareness, to determine immediate threats, alert travelers, and allow evasive action to be taken by drivers, pedestrians, or bicyclists. The basic safety messages can also be used by signal controllers to monitor traffic and optimize signal timing through the online implementation of Advanced Traffic Signal Performance Measures (ATSPM) system. Keywords - Connected vehicles, automated vehicles, traffic operations, and highway safety.