Low grade highway are accident prone locations.
低等级公路是事故多发的路段。
Furthermore, highway network mostly is the trouble of technical grade and service low.
中小城市的道路网普遍存在着公路网技术等级低、服务水平差等问题。
Furthermore, highway network mostly is the trouble of technical grade and service low.
中小城市的道路网普遍存在着公路网技术等级低、服务水平差等问题。
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