北京工业大学学报
北京工業大學學報
북경공업대학학보
JOURNAL OF BEIJING POLYTECHNIC UNIVERSITY
2015年
9期
1405-1414
,共10页
城市快速路%立交桥型指路标志%驾驶模拟%速度类指标%配对T检验
城市快速路%立交橋型指路標誌%駕駛模擬%速度類指標%配對T檢驗
성시쾌속로%입교교형지로표지%가사모의%속도류지표%배대T검험
urban expressway%interchange pattern guide sign%driving simulator%speed kind indicators%pair T test
为研究城市快速路不同立交匝道类型条件下立交桥型指路标志对行驶速度的影响,以立交桥型指路标志、立交桥匝道类型作为实验控制因素设计12个实验场景,通过驾驶模拟实验获得车辆行驶状态数据;以速度、速度标准差、加速度、加速度标准差为速度类指标,结合配对T检验的方法进行影响研究.问卷统计结果显示,31名被试中47.83%认为城市快速路出口指路标志系统中“立交桥型指路标志冶指路效果最佳,61.9%被试认为指路标志将影响其行驶速度,主要使其速度变慢.数据分析结果表明,受匝道线形复杂程度作用,不同类型匝道条件下,与三级预告标志组合设置时立交桥型指路标志对速度类指标的影响不同:定向匝道条件下,驾驶员速度类指标未受影响;半定向、环形匝道条件下,立交桥型指路标志作用范围内车辆行驶速度变低,立交桥型指路标志降速作用的关键影响区域集中在相应匝道出口附近.半定向、环形匝道条件下,作用范围逐段内驾驶员受立交桥型指路标志显著性影响的速度类指标、关键区域不同.同时,立交桥型指路标志、三级预告标志组合使用时,两者效用间存在一定的耦合作用,这种耦合作用在半定向、环形匝道条件下具有不一致性.
為研究城市快速路不同立交匝道類型條件下立交橋型指路標誌對行駛速度的影響,以立交橋型指路標誌、立交橋匝道類型作為實驗控製因素設計12箇實驗場景,通過駕駛模擬實驗穫得車輛行駛狀態數據;以速度、速度標準差、加速度、加速度標準差為速度類指標,結閤配對T檢驗的方法進行影響研究.問捲統計結果顯示,31名被試中47.83%認為城市快速路齣口指路標誌繫統中“立交橋型指路標誌冶指路效果最佳,61.9%被試認為指路標誌將影響其行駛速度,主要使其速度變慢.數據分析結果錶明,受匝道線形複雜程度作用,不同類型匝道條件下,與三級預告標誌組閤設置時立交橋型指路標誌對速度類指標的影響不同:定嚮匝道條件下,駕駛員速度類指標未受影響;半定嚮、環形匝道條件下,立交橋型指路標誌作用範圍內車輛行駛速度變低,立交橋型指路標誌降速作用的關鍵影響區域集中在相應匝道齣口附近.半定嚮、環形匝道條件下,作用範圍逐段內駕駛員受立交橋型指路標誌顯著性影響的速度類指標、關鍵區域不同.同時,立交橋型指路標誌、三級預告標誌組閤使用時,兩者效用間存在一定的耦閤作用,這種耦閤作用在半定嚮、環形匝道條件下具有不一緻性.
위연구성시쾌속로불동입교잡도류형조건하입교교형지로표지대행사속도적영향,이입교교형지로표지、입교교잡도류형작위실험공제인소설계12개실험장경,통과가사모의실험획득차량행사상태수거;이속도、속도표준차、가속도、가속도표준차위속도류지표,결합배대T검험적방법진행영향연구.문권통계결과현시,31명피시중47.83%인위성시쾌속로출구지로표지계통중“입교교형지로표지야지로효과최가,61.9%피시인위지로표지장영향기행사속도,주요사기속도변만.수거분석결과표명,수잡도선형복잡정도작용,불동류형잡도조건하,여삼급예고표지조합설치시입교교형지로표지대속도류지표적영향불동:정향잡도조건하,가사원속도류지표미수영향;반정향、배형잡도조건하,입교교형지로표지작용범위내차량행사속도변저,입교교형지로표지강속작용적관건영향구역집중재상응잡도출구부근.반정향、배형잡도조건하,작용범위축단내가사원수입교교형지로표지현저성영향적속도류지표、관건구역불동.동시,입교교형지로표지、삼급예고표지조합사용시,량자효용간존재일정적우합작용,저충우합작용재반정향、배형잡도조건하구유불일치성.
To analyze interchange guide signs' influence on vehicle speed in three kinds of interchange ramps of an urban expressway, vehicle operating data through a driving simulator experiment which was composed of twelve scenarios on basis of guide signs and different kinds of interchange ramps as two sorts of experiment controlling factors were obtained. The affected situation of speed kind indicators,“speed, standard deviation of speed, accelerator and standard deviation of accelerator”, were analyzed through pair T test. The result of subjective questionnaires showed that 47.83% experimenters thought“interchange pattern guide sign” was the most effective among the system of interchange guide signs, and 61.9% experimenters selected the running speed as the primary impacted factor, which was mostly reduced. Meanwhile, results of vehicle operating data indicated that under the effect of different levels of complex alignments of ramps, “interchange pattern guide sign” cooperated with three advanced guide signs had different influences on the speed kind indicators in three kinds of interchange ramps. In directional ramp, the speed indicators were not affected. But, in semi-direction ramp and loop ramp, the speed during affected range of“interchange pattern guide sign” was reduced significantly and the critical effected segments were mainly gathered in the vicinity of corresponding ramp exit. Nevertheless, speed indicators and critical affected segments influenced by “interchange pattern guide sign” were different in semi-direction ramp and loop ramp as a whole. What's more, the interaction effect between effects of“interchange pattern guide sign” and “three advanced guide signs” existed and was different in semi-direction ramp and loop ramp.