The Safety Designing Methods Of The Intersection Guide Sign In City Based On Driver's Short-Term Memory And Its Attenuation Characteristics

the original land already can't satisfy the existing urban's development.Many cites are expanding to have a better development,it leads the space travel span increases and the traffic information become more complex.At the same time,the way traffic signs have an important position among many traffic information.The stand or fall of the way traffic signs directly affects the driving safety and efficiency.In addition,the drivers are playing an important role in the visual recognition of the road signs,the short-term memory and the actual traffic environment.Based on this,this article use the method of combination of indoor and outdoor experiments,explore a driver in the different directions of intersection traffic environment short-term memory and the attenuation law of road traffic sign,directions for intersection traffic signs Settings provide relevant reference.The paper firstly studies the theory of short-term memory,driving people's recognition of traffic signs.Then based on the above theory,the paper scientific design of indoor experiment and real vehicle experiment,this paper randomly selected from the 60 subjects indoor experiment,research the different quantity information direction sign of short-term memory and forgetting,features,and according to the forgetting curve of ebbinghaus memory short-term memory attenuation model is established,by using the experimental data of the parameters in the model,the calibration results show that:(1)the way sign on every message number,driving the memory time of the increase is the bigger of the two(2)the driver after the completion of the memory,within the first 30 s keep information capacity is larger,the memory is relatively clear,but also quickly forgotten,30 s forgotten after slowly.Because of the complexity of the outdoor experiment and the difficulty of the subjects were selected,the real vehicle experiment to choose the outdoor sunny days and rainy days,two kinds of traffic environment experiment to analyze the experimental data with two kinds of traffic environment of short-term memory decay curve in different traffic conditions and different characteristics of driver attenuation characteristics of short-term memory.Finally,according to the experimental conclusion research direction sign front distance under different traffic conditions intersection reasonable set up according to the related research and theory to discuss the traffic signs and reasonable setting method.