Recommended Citation
He, Z., Mathew, A., Ingale, A., Zhou, J., Li, F., & Chen, Y. (2024). Traffic management geocast study with connected vehicles on Indiana highways (Joint Transportation Research Program Publication No. FHWA/IN/JTRP-2024/19). West Lafayette, IN: Purdue University. https://doi.org/10.5703/1288284317753
DOI
10.5703/1288284317753
Abstract
Vehicular communication allows vehicles to interact with road users, roadside infrastructure, and cloud-connected devices.It holds a crucial position in modern transportation systems, impacting both fundamental and advanced aspects and enhancing traffic safety and efficiency. C-V2X is a wireless communication technology that uses cellular networks to enable communication between vehicles and infrastructure. C-V2X can be used for applications such as collision avoidance, traffic management, and remote vehicle diagnostics. This project conducted a feasibility study on the current position of C-V2X in the industry and developed a prototype, RampCast, to fundamentally understand the current C-V2X implementations as part of the 3GPP Release 14. A comprehensive review on the state-of-the-art CV2X technologies and various demonstration projects were carried out by the automotive industry, cellular wireless chips/systems companies, and federal/states DOTs in the U.S. and Europe. A geocast-based prototype system, named RampCast, was built using a software-defined radio approach. The RampCast algorithms focused on the geocasting and were developed for improving message prioritization and retransmission. The field tests that were conducted in a campus parking lot and on the test track revealed sub-100 ms latency and a range of up to 2,500 ft for C-V2X, which emphasized its effectiveness in transmitting critical messages and traffic guidance. Further extensions for the prototype include incorporating multiple units, expanding message types (e.g., points of interest and location-specific adverts), optimizing the prototype's GUI for diverse scenarios, and conducting long-term data analysis for better message flow optimization.
Report Number
FHWA/IN/JTRP-2024/19
Keywords
C-V2X, connected vehicle, geocast
SPR Number
4743
Performing Organization
Joint Transportation Research Program
Sponsoring Organization
Indiana Department of Transportation
Publisher Place
West Lafayette, Indiana
Date of this Version
2024
Technical Summary