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车行道隔离设施主要采用三种形式：绿化分隔带、隔离护栏、混凝土防撞墙。在市区范围内，优先选取的形式依次为绿化分隔带、隔离护栏；在市郊范围内，优先选取的形式依次为绿化分隔带、混凝土防撞墙、隔离护栏。车行道隔离设施应明显易见，端部应配置反光设施，在无照明或照明较差的路段上应全线配置反光设施，并在端部设置反光或防撞设施。
There are three main types of roadway isolation facilities: green partition belt, isolation barrier and concrete anti-collision wall. Within the urban area, the preferred forms are greening partition belt and isolation barrier; in the suburban area, the preferred forms are greening partition belt, concrete anti-collision wall and isolation barrier. The isolation facilities of carriageway shall be obvious and easy to see. Reflective facilities shall be provided at the end. Reflective facilities shall be provided along the whole line on the road section without lighting or with poor lighting, and reflective or anti-collision facilities shall be provided at the end.