Q-Free brings traffic tech to Indiana

Q-Free is to install 269 traffic signal controllers, including its new Intelight XN-1 and XN-2 Advanced Transportation Controllers, throughout the US state of Indiana. Q-Free says the XN-series controllers offer OLED (organic light-emitting diode) monitor screens with readability even in direct sunlight and built-in GPS for corridor networking, coordinated operations and real-time signal timing.