摘要
绕城高速公路出入口标志极易出现信息过载的情况,一方面,绕城高速环城而建,内部连接城市道路,外接放射线高速,需要指示和指明的信息较多;另一方面,目前中国实施的关于交通标志版面信息量的规范较少,设置过程中缺乏相应的理论指导,容易使得驾驶人读取、识别指路标志信息有误,进而导致到达目的地不准确、影响驾驶安全等问题。设计绕城高速公路出入口指路标志版面信息量试验,采用AutoCAD制作不同信息条数的标志,通过三维虚拟现实软件UC-Win/Road进行道路建模,并利用驾驶模拟功能,实现动视力环境下的信息搜寻过程;运用SPSS箱形图法、稳健估计理论对比分析悬臂式、门架式指路标志版面信息,得到不同类型下指路标志信息量阈值。对比SPSS箱形图法、稳健估计理论下信息条数与信息搜寻时间的关系,发现随着悬臂式指路标志信息条数的增加,2种方法的信息搜寻时间均出现上升趋向。当标志板中的信息大于6条时,驾驶人搜索信息的时间会呈现突增的趋势,因此在一块标志板上,道路、地名等信息应不超过6条。门架式指路标志试验中,信息搜寻时间随着信息条数的增加而增加,且整体呈现逐渐加快的增长趋势。2种方法出现趋势突变的节点不同,当信息为8条时,SPSS箱形图法曲线出现突变趋势;当信息为9条时,稳健估计理论曲线出现突变。建议的绕城高速出入口指路标志信息量阈值分别为,悬臂式最多5条信息,门架式最多9条信息。
Information overload of entrances and exit signs of ring expressways is easy to appear,On the one hand,it is built around the city and is connected to the city.Ring expressway is connected to city road and freeways,so there is more information on the guide signs.On the other hand,there are few specifications for traffic sign layouts in China.The rapid construction of expressways in cities has led to excessive information on the information signs of ring expressways.Moreover,the implementation of traffic information on the layout of traffic signs in China is not sufficiently standardized,resulting in excessive information on the information signs of ring expressways;thus,it is challenging for drivers to read and process the information.In addition,the information conveyed by the signs is incorrect in some cases,which affects navigation accuracy and driving safety. This study employed the UC-Win/Road driving simulation function to design and analyze cantilever-type and gantry-type markings using 3 D virtual reality software.AutoCAD was used to design signs with different information strips.The simulation function realizes information search process under dynamic vision environment.The SPSS box map method and robust estimation theory were used to process the data and obtain the threshold values for different types of road signs.Analysis of the data trends for the two analysis methods shows that the amount of information on the cantilevered road sign increases,and both analysis methods tend to rise gradually.When more than six pieces of information are displayed on the signboard,the time required for a driver to search for the information exhibits an abrupt increase.Therefore,there should not be more than six pieces of information regarding roads and locations on a signboard.In the gantry-style signage experiment,it was found that the information search time increased with an increase in the amount of information,and the overall tend is gradually accelerating.In the two methods,the nodes with trend mutations are diff
作者
杨帆
王建军
马驰骋
王赛
王振国
YANG Fan;WANG Jian-jun;MA Chi-cheng;WANG Sai;WANG Zhen-guo(School of Transportation Engineering,Chang'an University,Xi'an 710064,Shaanxi,China;Management Committee of Qinhan New City in Xixian New Area,Xianyang 712000,Shaanxi,China)
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2021年第4期251-260,共10页
China Journal of Highway and Transport
基金
陕西省交通运输厅科技项目(15-26K)
中央高校基本科研业务费专项资金项目(310821153402)。
关键词
交通工程
指路标志
SPSS箱形图法
绕城高速公路出入口
信息阈值
稳健估计理论
traffic engineering
guide sign
SPSS box map method
entrances and exits of ring expressway
information threshold
robust estimation theory
