Visual Communication Factors In The Urban-oriented Design Of Visual

China has stepped into an age of rapid urbanization, in which urban size has been expanded in an unprecedented speed due to various social factors. However, people get more and more difficult to recognize, memorize and describe the public spaces as a result of urban space structures and transports getting more and more complicated, and usually get lost due to the ambiguity or absence of the directional signs. In such a context, advocating scientific visual directional system design and planning scheme, the thesis classifies the functions and characteristics of modern urban directional system, analyzes the visual factors influencing it one by one to bring out a systemic and comprehensive theory for visual directional system designing, in the hope to provide some theoretical reference and guidance for further improvement in this field.The thesis will start with the characteristics and historical development of urban directional system, and then conduct a comprehensive and systemic research in the major elements for visual communications of the directional system. The major elements and considerations for visual directional communication in different environments will be well defined according to the classification of the urban directional system. By analyzing the theory of people's visual habits, practical research on the major elements of visual communication in directional system will then be conducted, and different planning designs and solutions will be proposed in response to different problems. At last, at the request of a harmonious development of cities and human beings, the thesis will analyze the major elements, problems and solutions of unobstructed directional design, to enhance the general applicability and efficiency of the overall urban visual directional system.