在印第安纳州的卡梅尔市,新建的一个环状交叉路口引人注目,堪称美国最为环保的公路交叉口。当城市面临着最繁忙的一条十字路口需要较大范围改造升级时,这不失为解决各种挑战的唯一最佳方案。它保护了许多建筑物,使交通事故大幅度降低,减少二氧化碳排放,让人们出行更加便捷。而且与传统的交叉路口相比,更节省建筑资金。在美国人的 In Carmel, Indiana, a new roundabout stands out as the most environmentally friendly intersection in the United States. When the city faces a busiest crossroads requiring a larger scale of upgrades, this is the best solution to every challenge. It protects many buildings, greatly reducing traffic accidents, reducing carbon dioxide emissions and making travel easier for people. And compared with the traditional intersection, saving more construction funds. In American