交通拥堵与温室气体排放

缓解拥堵项目可减少温室气体排放,但基于单个变量(如仅基于出行距离)的CO2排放预测并不精确.为了准确预测缓堵项目减少的CO2排放量,利用车辆运行检测技术、车辆活动数据库及根据车辆类型设计的排放模型,通过分析速度与排放的关系绘制速度-排放曲线,并结合交通运行检测数据,评价缓堵策略、速度管理策略、交通平滑策略等交通运行管理...

Traffic Congestion and Greenhouse Gas Emissions

Congestion mitigation programs can reduce CO2 emis-sions,but the prediction of CO2 emissions based on a single vari-ables（such as only based on travel distance） is not accurate.In order to measure the CO2 emissions re-duced by congestion mitigation pro-grams,this paper uses vehicle activ-ity measurements,vehicle activity database,and emission models de-signed for different vehicle types.By analyzing the relationship be-tween speed and CO2 emissions,the paper develops emissions-speed curves,and evaluates the effect oftraffic operational management techniques,which are congestion mitigation,speed management,traf-fic smoothing,on CO2 emission re-duction combining with Traffic op-eration test data.The study on a freeway in Southern California shows that the three improvements in managing traffic operations can reduce CO2 emissions：Each of them can reduce CO2 emissions by 7 to 12 percent.All three in combi-nation can reduce CO2 emissions by approximately 30 percent.