ITSC 2025 Paper Abstract

Paper WE-LA-T3.2

Mathew, Abin (Purdue University), Peng, Juntong (Purdue University), Zhou, Jue (Purdue University), Wang, Ziran (Purdue University), Li, Feng (Purdue University), Sturdevant, James (Indiana Department of Transportation), Cox, Edward (Indiana Department of Transportation), Chen, Yaobin (Purdue University)

RampCast II: A Dual-Interface V2X Framework for Reliable Traffic Information Delivery

Scheduled for presentation during the Regular Session "S03c-Connected Vehicle Technologies and Intelligent Infrastructure Systems" (WE-LA-T3), Wednesday, November 19, 2025, 16:20−16:40, Southport 3

2025 IEEE 28th International Conference on Intelligent Transportation Systems (ITSC), November 18-21, 2025, Gold Coast, Australia

This information is tentative and subject to change. Compiled on October 19, 2025

Keywords Vehicle-to-Infrastructure (V2I) and Vehicle-to-Vehicle (V2V) Communication Applications for Traffic Management, Implementation of V2X Communication in Urban Traffic Systems, Real-world ITS Pilot Projects and Field Tests

Abstract

Vehicle-to-Everything (V2X) communication promises safer and more efficient transportation through advanced information and communication technologies. Cellular V2X (C-V2X) is a promising approach, but C-V2X sidelink's short range and the higher latency of cellular communication pose challenges. To address these limitations, this paper introduces RampCast II, an integrated framework that leverages both direct (PC5 interface) and cellular (Uu interface) communication. RampCast II is designed for efficient traffic management by intelligently utilizing the strengths of each interface: PC5 for low-latency communication within short ranges and Uu for robust connectivity over wider areas. Field experiments on Indiana highways and streets demonstrate that PC5 offers superior short-range performance, while Uu provides consistent long-range coverage. Importantly, message transmission latency for both interfaces remains below 50ms within their operating ranges, enabling reliable delivery of SAE-compliant traffic management messages across diverse routes and conditions. This integrated system offers a practical and scalable solution for real-world V2X deployments. The code for RampCast II will be made publicly available upon acceptance of this paper.