RECENT APPLICATIONS OF HARDWARE-IN-THE-LOOP TRAFFIC SIMULATION

A relatively new addition to the Traffic Engineers toolbox called hardware-in-the-loop traffic simulation enhances traditional microscopic traffic simulation by replacing the emulated traffic signal control logic in the traffic simulation model with real traffic signal control hardware (hardware in the loop) that interacts with the simulation model. This increases the realism of the simulation and provides access to controller features currently not available in software-only simulation models. This paper first gives a discussion of hardware-in-the-loop traffic simulation and then describes some recent applications of this exciting technology by the Texas Transportation Institute