【摘 要】
：
高速公路是当今等级最高的公路。它是一种高标准、高通行能力、高速度和高度安全的公路。它是专供汽车分道高速行驶并全部控制出入的公路。高速公路的路基宽度一般为26米，设双
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高速公路是当今等级最高的公路。它是一种高标准、高通行能力、高速度和高度安全的公路。它是专供汽车分道高速行驶并全部控制出入的公路。高速公路的路基宽度一般为26米，设双向四车道，在上、下车道中间必须设有中间3米的分隔带。高速公路的特点是行车速度高，一般设计时速为
The highway is today the highest grade highway. It is a high standard, high-capacity, high-speed and highly-secure highway. It is designed for high-speed car lane and full access control of the highway. Freeway embankment width is generally 26 meters, set two-way four lanes, in the middle of the next lane must have a middle 3 meters of the separation zone. Expressway is characterized by high speed, the general design speed
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