Comtrol’s RocketLinx Switch “the Edge of the Network” for Mcity
The University of Michigan, in partnership with the Michigan Department of Transportation, designed and built Mcity, a unique urban-suburban environment for testing connected and automated vehicles and systems.
Mcity sits on a 32-acre site on the University of Michigan’s North Campus, with more than 16 acres of roads and infrastructure. It includes approximately five lane-miles of roads with intersections, traffic signs and signals, sidewalks, benches, simulated buildings, street lights, and obstacles such as construction barriers. This environment allows the testing of new technologies, such as autonomous vehicles, in a safe, controlled, but otherwise real-world environment.
At Mcity, each set of traffic signal devices in an intersection, on-ramp, rail crossing, crosswalk, etc. is connected to the facility’s traffic management network via a dedicated fiber link using Comtrol’s ES8510-XT
switch. This network then consolidates each of those connections onto a high-speed backbone, which in turn connects to a state-of-the-art traffic control center, located near Mcity at the U-M Transportation Research Institute (UMTRI).
The traffic signal devices connected to the ES8510-XT include a Road Side Unit (RSU), a Traffic Controller, and an embedded connected vehicle (CV) data collection device developed by UMTRI.
In addition to the ES8510-XT, Mcity has also chosen to implement Comtrol’s RocketLinx ES8108
. The ES8108’s sole purpose is to aggregate the video/radar portion of Mcity’s traffic control system- which includes four video cameras and two radar sensors per intersection. From here, the switch is daisy chained to the ES8510-XT and all communication is relayed back to U-M’s TCC (Traffic Control Center).
“Mcity required trouble-free equipment that would occupy crucial places in our infrastructure. The switches’ ability to operate in the harsh conditions of Michigan weather, handle complex requirements, such as multiple fiber connections, VLAN, etc., and their easy configuration have left us satisfied with our decision in choosing Comtrol
”. – Greg McGuire, Mcity Lab Director
For more information, contact: Katya Lee