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Creating a \Since 1974 , the United Nations clearly put forward the concept of \Urban road the crowd traffic channel , different people have different needs , it directly determines the safety and comfort of people in urban road travel . Therefore , the design of urban roads , including barrier-free design , they proposed a higher , more reasonable request . The subject first analyzes the status of a city road accessibility design , analyzes and summarizes the current urban road barrier free design problem . Followed by analysis of the current situation and development trend of the disabled, the old , the young , the weak , the sick and other people , and through the current barrier-free construction of urban roads in China and China's \design theory . Analysis of behavioral characteristics and needs of different groups of people , the population of the urban road into the visually impaired, physically impaired and speech impaired , and analysis of the different needs of different groups of people on the city roads . Then , the optimization of urban road accessibility . Accessible design concept , based on the classification of the obstacle crowd at various points in the city roads , line, surface accessibility settings to optimize the blind road system , re- elaborated and detailed design of perception blind road , proposed and designed deceleration belt Blind Sidewalk and crosswalk blind road , traffic lights , ramps , stairs , accessible vehicles , traffic signs optimization. Finally, the use of a specific example of engineering applications , accessibility compared before and after optimization , and analysis of the feasibility of the new method .
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