Notice of RetractionStudy on the efficiency model of urban intersections

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

In order to reflect the utilization of time-space resources comprehensively, efficiency of urban intersection was studied. conflict intensity was put forward as a parameter quantifying traffic conflict, three kinds of conflict intensity models were developed on traffic flow, conflict point and intersection level respectively, efficiency model was developed by selecting average velocity, volume and conflict intensity. Finally the model between efficiency and conflict intensity was developed by specific examples of Nanjing in China, the conclusion indicates that the relation between them can be expressed with logarithm function. Because efficiency model can be applied to any traffic volume condition, it can evaluate working conditions of intersections more widely.