Summary
As agencies progress toward the next generation of traffic management systems (TMSs), new software that adds functions has to be implemented within TMSs. A TMS software could be modular or stand-alone, but has to be integrated within a software subsystem of TMSs. These software subsystems could use proprietary, commercial-off-the-shelf (COTS), open-source, or customized software or a combination produced by agency staff and external developers. Agencies will benefit from an understanding of options and best practices for designing, procuring, and managing software subsystems to address current and evolving needs of traffic management and TMS.