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为全面分析不合理绿化导致的行车安全问题,研究了平曲线内侧绿化对行车视距的影响,中央分隔带绿化植物株距和高度对防眩、横向通视、植物存活率等的影响,大冠径常绿类植物对道路净空、驾驶员心理的影响,绿化遮挡交通标志或高速公路出入口对行车产生的误导现象,立交匝道及其出入口绿化对行车诱导、出口缓冲和入口通视的影响,以及隧道出入口绿化对眼睛明暗适应性的影响。提出平曲线内侧的植物冠径和冠高控制措施,并根据防眩要求从儿何上确定计算中央分隔带植物的株距、高度的方法,最后探讨了对隧道出入口和立交匝道不同位置绿化安全性的强化措施。研究表明,绿化可从多方面对高速公路行车安全产生影响。
In order to comprehensively analyze the driving safety problems caused by unreasonable afforestation, the influence of afforestation on the line-of-sight distance, the plant spacing and height of afforestation in the central dividing zone, the effects of anti-glare, lateral vision and plant survival rate, The effects of evergreen plants on the road clearance and driver’s psychology, the misleading phenomenon caused by greening and obscuring traffic signs or expressway entrances and exits, the impact of interchange ramp and its entrance greenway on driving induction, exit buffer and entrance inspection, and Influence of Tunnel Greening on Eyesight Adaptation. Based on the requirements of anti-glare, the method of calculating the plant spacing and height of the plants in the central division was established. Finally, the safety of greening at different positions of the tunnel entrance and exit and the on-ramp was discussed Strengthening measures. Research shows that afforestation can affect the driving safety of expressways in many ways.