Research on Sidewall Patterns of Extra-long Highway Tunnels under Driving Simulation Environment
Highway long tunnels are an important part of China's transportation system,however,their monotonous traffic operating environment leads to frequent traffic accidents,thus it is imperative to improve the tunnel traffic environment to enhance safety.Tunnel sidewalls contain important environmental information,and the reasonable setting of patterns can stimulate the visual perception of drivers and alleviate the psychology of discomfort.However,at present,there is a lack of effective standards for setting up sidewall patterns in tunnels.In the paper,the two aspects of sidewall pattern:setting locations and pattern styles are explored.First,SCANer is used to design and carry out 10 km highway driving simulation test and obtain driving performance data,and through the Pearson correlation coefficient method,evaluation indicators are screened,after principal component analysis,the comprehensive evaluation formula is obtained,and then the driving state change process is divided into sober,mild fatigue,moderate fatigue and severe fatigue four categories.It is found that drivers are easy to produce an unsafe state in the distance from the entrance of 5.33 km,whereit is more reasonable to set the side wall pattern.Then,from the practical application and human-machine engineering related theories,two kinds of sidewall patterns:"Polka Dot Combination"and"Blue Sky and White Clouds"are designed,and it is found that both patterns can effectively improve the driving state through descriptive statistical analysis.Further,the entropy weight-fuzzy comprehensive evaluation model is constructed to analyze and evaluate the safety of the two patterns,and the results show that the"Polka Dot Combination"pattern has a higher comprehensive evaluation score and better safety performance,which is presumed to be due to the fact that the pattern of the natural landscape category involves more elements,which has a certain negative effect on the driver's attention.Considering the randomness of pattern design,it is necessary to analyze the pattern according to the specific situation in the actual project.
万方数据
维普
