Urban road traffic intelligent control method and server

The invention discloses an urban road traffic intelligent control method and a server, and the method comprises the steps: determining an accident occurrence place according to monitoring image information under the condition that the server receives the monitoring image information, sent by monitoring equipment, about a road; determining the road where the accident occurs as a blocked road; obtaining an estimated congestion length according to the congestion traffic flow information and the estimated congestion duration information; determining a diversion road corresponding to the diversion traffic flow information smaller than a preset jam critical value as a smooth road; determining a plurality of first shunting intersections, connected with the unobstructed road, of the blocked road within the estimated blocking length; and sending a first instruction to a plurality of first variable traffic lights of a plurality of first shunt intersections, so that the plurality of first variable traffic lights determi