In America, the optimum density for the best use of road space is around 50 vehicles per lane-mile.

在美国，道路最佳使用效率的理想车辆密度大约是每车道英里50辆车。

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Traffic gridlock looms in the big cities, especially Jakarta, where the number of motor vehicles has tripled to 9.5m in the past eight years but road space is growing at less than 1% a year.

交通拥堵的梦魇隐约逼近国内各大城市，尤其是雅加达，过去八年该城市机动车数量蹿升至950万，增加了两倍，而车道增加量一年还不到1%。

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Part vi: Analyze the road space environment in hilly area, propose the methods to create space environment for vehicles and walk.

第六部分，分析了丘陵地区的道路空间环境，提出了营造车行及步行空间环境的方法。

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Part vi: Analyze the road space environment in hilly area, propose the methods to create space environment for vehicles and walk.

第六部分，分析了丘陵地区的道路空间环境，提出了营造车行及步行空间环境的方法。

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