Note logo sign design in recent years, changes in China's cities can be described as earth-shaking, urban landscape development and European and American countries are constantly reduced. The identification of a variety of urban development in many aspects signs of integrity, both normative and other designs where there is a little less than satisfactory. For example, in the construction of residential quarters and squares in the monotony, monotonous similarity, the lack of specific environmental and cultural connotation and distinctive image features prominent. Overall speaking, the design of the logo design is far behind the times, various identification system lags behind the modern design of the building of our city, therefore, improve the quality of our environment and landscape of system design is imperative. Efforts from the following aspects: 1, signs and speed of movement of people at different speeds, the vision is to change, the faster an object within the field of vision to see the vision decline more. How much concrete vision loss, must be verified by experiment, if the development of standards must be carried out a large number of experiments to investigate validation. 2. Signs Signs shape shape shape, especially traffic signs must comply with national or international standards, in the absence of standards circumstances, to pay attention to meet the easy identification, are not identical (the best kind) principle. According to human factors experiments, the same line of sight under the larger signs, people identify the shorter the time, the longer the opposite identification time depends on the size of the set how long we expect to complete the identification, of course, the first premise of this size is our normal vision In the farthest point on the set can also be visible horizon. On the highway, the vehicle speed, the driver must be completed to identify in a very short time, so the highway signs are generally much larger than the size of the urban road signs. A piece of the sign, write the number of words, the number of standard symbols or patterns, are there rules, first size must be able to see, and then one is able to read the identification is completed in the time expected. Clear signs of colors used or not with a great relationship, the same line of sight to see the different colors of the same size of signs, signs background and text symbols of the above, can be seen as well as how much time is needed to identify very different. In general, the higher the level of alert, more vivid colors used, the greater the color contrast. http://www.yncwbs.com/