In human society, people can drive safely and efficiently by following a set of traffic rules without a central traffic management system. Every driver has its own intelligent to understand and follow the rules and environment. In robot world, robot fleet management system (RFMS) running on powerful computer server is always required to management multiple robots at the same time through a dedicated Wifi network. Traffic control has been introduced to human society for over 100 years. It is very mature, reliable and easy understanding. The same concept can be adopted in the robots world. Multiple robots can run in the same environment by obeying preset rules such as speed limit, stop before go in junction area, virtual traffic light and queuing/parking control. Increasing number of robots won’t require additional computing power and Wifi data bandwidth. It can ease the loading on the server and Wifi network. In this project, a decentralized virtual traffic control system (DVTCS) together with a R2X device will be developed and deployed to solve multiple robots control problem. A warehouse delivery robots will also be developed and deployed to exemplify the proposed system.