The ages is an automation ages nowadays and transportation light control's waiting a lot of equipmentses of professions all is closely related with calculator.Therefore, a good transportation light control system, will hustle for road, illegal control etc. give technique innovation.Along with the technical quick development of the large scale integration and the calculator, and the artificial intelligence is control the extensive usage of technique, the intelligence equipments had a very big development, is the essential direction that modern science and technology develop.This text introduced the design of an intelligence transportation light system.The intelligence's transportation light control the system can carry out of the function have:Carry on supervision to four main transportation street corners of some downtown;Each street corner contains fixed work period, and control center in the road hustle the hour can change its period;Can immediately take photo to the street corner illegal automobile, and withdraw license plate number.That design introduced with AT89 c 51 single slice machine for the street corner control core, respond to spread a feeling machine to collect illegal signal by Ci, medium control room to take tiny machine as controller to carry on keeping watch on illegal processing etc. operation to the street corner, the portrait delivers the adoption telecommunication ADSL public net to carry on deliver.To single slice the correspondence of the machine adopt the MAX232 carry on a conversion and this system still has already defended to crash to wait function while being an accident to crash.