We describe the I-24 MOTION open road testbed led by the Tennessee Department of Transportation on Interstate 24 near Nashville, TN. The purpose of the testbed is to provide an open road experimental facility for testing traffic management and automated vehicle technologies in real freeway traffic. The testbed consists of pole-mounted 4K resolution video cameras providing uninterrupted coverage of the roadway. Video data is processed in real time into vehicle trajectories for all vehicles passing through the testbed. The current length of the testbed is approximately 1600 feet and upon its completion will stretch 6 miles. Testbed specifications, hardware, and design decisions are discussed, as well as the future of the testbed construction.
We introduce the I-24 Mobility Technology Interstate Observation Network (MOTION), a transportation cyberphysical systems testbed under development in Tennessee. It consists of a six-mile freeway segment instrumented with 400 4K resolution cameras, processed by a real-time compute system to enable continuous performance monitoring of freeway traffic. The testbed is being developed to support next generation connected and autonomous vehicle technologies and advanced traffic management. When complete, the testbed will be the longest continuously observed freeway segment in the world. This article introduces the testbed, discusses the core design choices, and outlines the preliminary work conducted to support the design.