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高速公路因其具有大流量、高速度、安全、舒适的特点,已得到社会的承认。近几年,河北省高速公路的发展日新月异,高速公路通车里程已达1480公里,建成有京石、石太、石安、石黄、京秦、保津、京津塘、京张、宣大、京福等十几条高速公路,在全省基本形成了高速公路网,它对促进全省的经济发展具有极大的推动作用。随着高速公路的发展,高速公路的绿化和美化也越来越引起公路建设和管理部门的重视。它不仅有防止水土流失,稳定路基的作用,而且,还能优化、美化行车环境,利用植被的诱导行驶和防眩作用来保障行车的舒适、
Because of its high traffic flow, high speed, safety and comfort, the highway has been recognized by the society. In recent years, with the rapid development of expressways in Hebei Province, the mileage of expressways opened to traffic has reached 1,480 kilometers and built into Beijing-Shijiazhuang, Shih-Tai, Shi’an, Shihuang, Jingqin, Baojin, Jingjintang, Jingzhang, Beijing Fu and a dozen highways, the basic formation of the province’s highway network, which is to promote the province’s economic development has a great role in promoting. With the development of the expressway, the greening and landscaping of the expressway have also attracted more and more attention from the highway construction and management departments. It not only has the function of preventing soil and water loss and stabilizing the roadbed, but also can optimize and beautify the driving environment, make use of the induced driving and the antiglare effect of vegetation to ensure the driving comfort,