考虑碳排放的公路交通通道选线方案优化——以河北乐亭为例

Optimization of Highway Traffic Channel Route Selection Scheme Considering Carbon Emission——Taking Leting in Hebei Province as an Example

以客货运均比较有代表性的滨海城市国省道交通流为例,从不同车型的污染物排放量出发,分析沿海干线公路交通流的车型组成特征、污染物排放特征。研究表明:特大货车、中型货车、小型货车主要分布在国道上,中小客车分布较为分散;国道小型货车、特大货车、中小客车污染排放最高,省道小型货车、中小客车污染排放最大;CO排放在各类公路中均占比最大;国道各类污染物排放量均远大于省道。综上所述,提出从减少公路流量、减少行驶里程、提高车速三个方面出发优化临港地区公路选线方案,以期为国省道公路体系绿色发展提供新的思路,从绿色发展角度为城镇周边过境公路的线路走向选择提供思考方向。

Taking the traffic flow of national and provincial highways in coastal cities,which are representative of both passenger and freight transport,as an example,starting from the pollutant emissions of different vehicle types,this paper analyzes the vehicle type composition characteristics and pollutant emission characteristics of the traffic flow of coastal trunk highways.The research shows that super large trucks,medium trucks and small trucks are mainly distributed on the national roads,while small and medium-sized buses are relatively scattered.The pollution emission of small trucks,extra large trucks and medium and small buses on national roads is the highest.The pollution emission of small trucks and medium buses on provincial roads is the largest.CO emission accounts for the largest proportion in all kinds of highways.The emissions of various pollutants from national highways are far greater than those from provincial highways.To sum up,the paper proposes to optimize the highway route selection scheme in the port area from three aspects:reducing the highway flow,reducing the mileage and increasing the speed,with a view to providing new ideas for the green development of national and provincial highway systems.From the perspective of green development,it provides a thinking direction for the route selection of transit roads around cities and towns.