看了中国那么多路不是水泥柏油马路，原来美国也有35% 的路也是简易路

来源: 于 2025-01-18 13:27:16 [旧帖] [给我悄悄话] 本文已被阅读：次
 
AI Overview
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In 2012, unpaved roads in the United States made up about 35% of the country's total road mileage. This includes gravel roads and unimproved roads. 
 
Explanation
  • Unpaved roads are a vital part of the transportation system in the United States. They are used for many purposes, including transporting food, getting children to school, and emergency response. 
     
  • The percentage of unpaved roads in the United States has been relatively stable since 1985. 
     
  • The proportion of unpaved roads varies by region. For example, in Colorado, about 70% of all roads are unpaved. 
     
  • Unpaved roads can be dangerous, but they account for only a small percentage of fatalities and serious injuries nationally. However, in some states, unpaved roads can account for up to 20% of fatalities.