In this paper, a comprehensive evaluation model (CEM) is proposed to verify the superiority of a new solution compared with the common toll plaza schemes. Targeting on the features of the evaluation system, dimensionless method has been carried out to analyze the indexes, which are total delay times, the accident rates, the cost and the traffic flow density. The weight of different indexes is depended on the decision-maker. Using the CEM, we can get a score of the new solution. The lower score represent the better performance.