分析城市交通环境空气影响因素，设计一套评价指标体系，并建立了环境大气质量评价的灰色决策模型。
Elements which influence the urban traffic air, we design a index system and construct the grey decision model to assess the Quality of the air.
出行生成模型：交通小区通达性和便利程度在很大程度上影响着居民的交通生成量，传统的出行生成预测模型无法反映这一特征。
This model demonstrates how the socioeconomic variable, traffic serving level and the socioeconomic variable around traffic zones contributes to the trip generations.
其次通过建立匝道合流交通模型，分析匝道入口控制对道路最大服务交通量的影响；
Then it establishes the traffic convergence model of ramp, and analyses the influence effect of ramp control on the maximum service traffic volume.
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