草原公路交叉口指路标志信息量阈值研究

Research on Information Threshold of Guide Signs at Grassland Highway Intersection

为解决草原公路交叉口指路标志信息量不足问题,搭建室内模拟试验场景,分析30名驾驶员的脑电波β、α/β,以及事件相关电位成分(Mismatchnegativity,MMN)、P300脑地形图变化规律,确定交叉口指路标志信息量的阈值,并通过反应正确率和反应时间对研究结果进行验证。结果表明,驾驶员的脑电波β、α/β变化均得出交叉口指路标志信息条数为6,7条;驾驶员的MMN、P300脑地形图分析得出交叉口指路标志信息条数为5,6条。通过驾驶员的反应正确率和反应时间进一步验证了交叉口指路标志信息条数为5,6条。因此,建议草原公路交叉口指路标志信息量阈值为5,6条,能够保证驾驶员准确地识别有效信息,以保证通行效率和行车安全。

In order to solve the insufficient information of the guide signs at the grassland highway intersection,an indoor simulation test scenario was built to analyze the information of 30 drivers'β,α/βbrainwave and Mismatchnegativity(MMN)and P300 brain topographic maps changes,determining the threshold value of the amount of information of the intersection guide signs,and verifying the research results through the correct response rate and response time.The results showed that,according to the changes ofβandα/β,the appropriate information signs of the intersection guide was 6 or 7;according to the analysis of MMN and P300 brain topographic maps of drivers,the appropriate information signs of the intersection guide was 5 or 6.Through the drivers'correct response rate and reaction time,it was further verified that the number of intersection guide signs was 5 or 6.Therefore,suggesting that the information threshold of the guide signs at the grassland highway intersection is 5 or 6,which can ensure that the driver can accurately identify the effective information,ensuring the traffic efficiency and driving safety.