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水泥预制标志牌的制做和设置存在着位置不准确、不美观、影响桥上施工作业、容易松动、脱落的问题,危及桥下行人安全,与“建线”标准不符。研制使用铁质标志牌后,取得了较好的经济效益和社会效益。
The manufacture and setting of cement prefabricated signboards have the problems of inaccurate position, unsightly appearance, impact on bridge construction work, easy loosening and falling off, endangering the pedestrian safety under the bridge and inconsistent with the standard of “building line”. The development of the use of iron signs, achieved good economic and social benefits.