Area traffic control method based on line coordination

The invention discloses an area traffic control method based on line coordination, which comprises the following steps: determining one of a plurality of crossroads as a related intersection and using a coordination phase on a subarea where the related intersection is positioned as a reference phase; determining the green light starting time of the coordination phase of the related intersection on the other subarea through the allocation of the green light starting time of the reference phase and the green ratio time of the related intersection; and calculating the green light starting time of residual coordination phases according to the green light starting time of the reference phase and the coordination phase and phase differences of all coordination phases of the area. Because the area traffic control method based on line coordination is used in the invention, conditions of areas including cross-subareas are fully considered, the traffic control of cross-subareas is coordinated, and the effect on the traffic control is better.