The taxi cabs are such good public advertising media in the modern cities,and LED Taxi Top Signs as a new model of mobile digital advertising ,which are already a huge market in Europe. The taxi top panel is use outdoor led lamps with high brightness,a clear picture can be displayed even in direct sunlight.The Advertising Taxi Top LED Sign through GPS real-time monitoring for accurate intelligent advertising managment.And The Taxi Top LED Screen adopt intelligent cooling system which makes the equipment work more reliable in hot and humidity environment.