SODI Traffic Information Display System (Terra - Q overall weather stations) accurately and timely detection of highway and road surface meteorological conditions, including road surface temperature, slippery road surface, road surface condition (dry/wet/wet/cream / ice/snow/ice thickness of the black ice/water/slurry mixture, etc.). By testing the dry degree of ground to calculate the friction of the ground, etc. Terra - Q weather stations, not only reasonable structure, advanced technology, measurement accuracy, more important is the system stable, free maintenance design, but also can be combined with other executive department monitoring subsystem, the implementation of intelligent traffic safety network.