文档介绍：work公路网密度highwaydensity公路等级highwayclassification公路自然区划climaticzoningforhighway公路用地highwayright-of-odationhighway国家干线公路(国道)nationaltrunkhighway省级干线公路(省道)provincialtrunkhighway县公路(县道)countyroad乡公路(乡道)position混合交通mixedtraffic交通流trafficflow交通流理论trafficflowtheory车流vehiclestream交通密度trafficdensity车头间距spaceheadway车头时距timeheadway车间净距vehiculargap延误delay地点速度spotspeed行驶速度runningspeed运行速度poeratingspeed临界速度criticalspeed平均速度averagespeed计算行车速度(设计车速)apacity道路服务水平公路交通规划交通调查交通量调査交通量观测站起迄点调查(OD调查)出行境内交通过境交通交通发生交通分布交通分配交通预测行车道分离式行车道车道变速车道加速车道减速车道爬坡车道停车道错车道自行车道路侧人行道分隔带中央分隔带中间带路肩路缘带路缘石侧向余宽路拱路拱横坡公路建筑限界公路路线公路线形平面线形纵面线形线形要素平曲线极限最小平曲线半径复曲线反向曲线断背曲线回头曲线缓和曲线竖曲线弯道加宽levelofservicetrafficplanningtrafficsurveytrafficvolumesurveytrafficvolumeobservationstationorigin-destinationstudytriplocaltrafficthroughtraffictrafficgenerationtrafficdistributiontrafficassignmenttrafficprognosiscarriagewaydividedcarriagewaylanespeed-urn-outlanecyclepathsidewalklaneseperatormediandividercentralstripshoulder;vergemarginalstripkerb;curblateralclearancecamber;poundcurvereversecurvebrokebackcurveswitch-backcurvetransitioncurveverticalcurvecurvewidening加宽缓和段超高超高缓和段纵坡最大纵坡最小纵坡变坡点平均纵坡坡长限制高原纵坡拆减缓和坡段合成坡度视距停车视距超车视距道路交叉道口平面交叉正交叉斜交叉环形交叉十字形交叉T形交叉错位交叉Y形交叉立体交叉分离式立体交叉互通式立体交叉首蓿叶形立体交叉部分首蓿叶形立体交叉cloverleafinterchange菱形立体交叉定向式立体交叉喇叭形立体交叉环形立体交叉匝道交叉口交叉口进口交叉口出口加铺转角式交叉口拓宽路口式交叉口分道转弯式交叉口渠化交通交织交织路段合流分流冲突点施志志计设镜标标究设施全道道桥话志钮光通志志志志志息线施施研计观岛岛岛岛设安横地天栅栅电标路反交标标标标标信标设设墙场性设景 通流心全线通行形形栏护光急光光道路告令示路助变面雪沙音车勘行形路线线线较线测测貌物形地口原丘丘岭溪交导中安沿交人人人护防遮应反反弯道警禁指指辅可路防防隔停踏可线公选路定比展初定地地地台域平微重山沿志志镜标标话志钮光通志志志志志息线施施区区区区线trafficislandchannelizationislandcentralislandrefugeislandroadsidefacilitiestrafficsafetvdevicecrosswalkpedestrianunderpasspedestrianovercrossingguardfenceguardfence,safetybarrieranti-dizzlingscreenemergencytelephonereflectivesignreflectivebuttontrafficmirrorroadtrafficsignwarningsignregulatorysignguidesigninformationsignauxiliarysignchangeablemessagesignpavementmarkingsnowprotectionfacilitiessandsprotectionfacilitiesacousticbarrierparkingareareconnaissancefeasibi