




文档简介
TRANSPORTATIONRESEARCHPROCEDIA320149099235214652014THEAUTHORSPUBLISHEDBYELSEVIERBVTHISISANOPENACCESSARTICLEUNDERTHECCBYNCNDLICENSEHTTP/CREATIVECOMMONSORG/LICENSES/BYNCND/30/SELECTIONANDPEERREVIEWUNDERRESPONSIBILITYOFTHESCIENTIFICCOMMITTEEOFEWGT2014DOI101016/JTRPRO201410094AVAILABLEONLINEATWWWSCIENCEDIRECTCOMSCIENCEDIRECT17THMEETINGOFTHEEUROWORKINGGROUPONTRANSPORTATION,EWGT2014,24JULY2014,SEVILLA,SPAINSUSTAINABLETRAFFICSAFETYMANAGEMENTATACCIDENTBLACKSPOTSCOMBINEDWITHDRIVERSPSYCHOLOGYANDVEHICLEENGINEERINGUSINGEYEMARKRECORDERHIROSHIWAKABAYASHIA,MASANORIANDOB,TADASHIKAWAGUCHIC,YUHKIHORIED,KYOHEIHOTTAEAMEIJOUNIV,433NIJIGAOKA,KANICITY,GIFU,5090261,JAPANBNAGOYAEXPRESSWAY,41730,SHIMIZU,KITAKU,NAGOYACITY,AICHI,4620844,JAPANCTOKENCEECONSULTANTSCO,LTD22025,MARUNOUCHISTBLDMARUNOUCHI,NAKAKU,NAGOYACITY,AICHI,4600002,JAPANDMARUKYOSHIKIINCCO358,TOKUDANISHI,GINANTOWN,HASHIMAGUN,GIFU,5016017,JAPANEJAPANAUTOMOBILEFEDERATION,3756,FUKUE,SHOWAKU,NAGOYACITY,AICHI,4660059,JAPANABSTRACTTHISPAPERPROPOSESANINTEGRATEDAPPROACHFORSUSTAINABLETRAFFICSAFETYMANAGEMENTATACCIDENTBLACKSPOTS,INCLUDINGAMECHANISMTHATTRACKSTHEOCCURRENCEOFACCIDENTSFROMTHEMOMENTOFDRIVERSVISIONTOACTUALACCIDENTOCCURRENCE,VIAVEHICLEBEHAVIORANACCIDENTBLACKSPOTCANBECOMEA“VICIOUSCIRCLE”OFACCIDENTOCCURRENCEANDSAFETYCOUNTERMEASURES,WHEREASAFETYCOUNTERMEASUREISREPEATEDLYPERFORMED,BUTITSEFFECTSOONFADESEACHTIMEFORSUCHASPOT,IMPLEMENTATIONOFASAFETYCOUNTERMEASUREFROMONLYTHEHIGHWAYPOINTOFVIEWHASNOSUSTAINABILITYTHEREFORE,TOBEEFFECTIVEASONEOFTHENEXTGENERATIONSAFETYCOUNTERMEASURES,THEMETHODMUSTINTEGRATECONSIDERATIONSFROMTRAFFICENGINEERING,DRIVERSPSYCHOLOGY,ANDVEHICLEBEHAVIORTHISPAPERPROPOSESANDDISCUSSESANEXTGENERATION,INTEGRATEDTRAFFICSAFETYMANAGEMENTMETHODANDANEXPLANATIONOFAMECHANISMTHATTRACKSACCIDENTOCCURRENCEWHEREDRIVERSWATCHFIRSTANDTHENHOWVEHICLESBEHAVEANDLASTLYWHATACCIDENTRISKINCREASESASTHESERIESOFEVENT2014THEAUTHORSPUBLISHEDBYELSEVIERBVSELECTIONANDPEERREVIEWUNDERRESPONSIBILITYOFTHESCIENTIFICCOMMITTEEOFEWGT2014KEYWORDSTRAFFICSAFETYSUSTAINABILITYCOMBINATIONOFTRAFFICENGINEERING,DRIVERSPSYCHOLOGY,ANDVEHICLEENGINEERINGEYEMARKRECORDERCORRESPONDINGAUTHORTEL81574690131FAX81574690155EMAILADDRESSWAKABAYAURBANMEIJOUACJP2014THEAUTHORSPUBLISHEDBYELSEVIERBVTHISISANOPENACCESSARTICLEUNDERTHECCBYNCNDLICENSEHTTP/CREATIVECOMMONSORG/LICENSES/BYNCND/30/SELECTIONANDPEERREVIEWUNDERRESPONSIBILITYOFTHESCIENTIFICCOMMITTEEOFEWGT201491HIROSHIWAKABAYASHIETAL/TRANSPORTATIONRESEARCHPROCEDIA3201490991INTRODUCTIONTHISPAPERPROPOSESTOINTEGRATETRAFFICSAFETYMANAGEMENTOFTRAFFICENGINEERING,DRIVERSPSYCHOLOGY,ANDVEHICLEENGINEERINGTOCREATEASAFERSOCIETYINGENERALANDSPECIFICALLYATACCIDENTBLACKSPOTSINTRAFFICACCIDENTSINJAPANTHATRESULTEDINFATALITIES,THENUMBEROFVICTIMSTHATDIEDWITHIN24HREACHEDAPEAKOF16,765IN1970ANDSTEADILYDECREASEDTO8,466IN1979LATER,HOWEVER,THENUMBEROFTHESEFATALITIESINCREASEDANDREACHEDASECONDPEAKOF11,452IN1992NATIONALPOLICEAGENCYSTATISTICS,2013TOATTAINTHEULTIMATEOBJECTIVE,IE,ASOCIETYWITHNOTRAFFICACCIDENTS,THEJAPANESEGOVERNMENTHASBEENSTRIVINGTOATTAINTHEMEDIUMTERMOBJECTIVESETIN2003OF“ACHIEVINGTHEWORLDSSAFESTROADTRAFFICBYREDUCINGTHEANNUALNUMBEROFROADTRAFFICFATALITIESTO5,000ORLESS,BYTHEENDOFTENYEARSCABINETOFFICE,GOVERNMENTOFJAPAN,2006”THEREFORE,THEGOVERNMENTESTABLISHEDAFIVEYEARPROGRAM,CALLEDTHEEIGHTHFUNDAMENTALTRAFFICSAFETYPROGRAM,THATCOVERSTHEYEARSFROMFISCALYEARFY2006TOFY2010ANDAIMSTOREDUCETHEANNUALNUMBEROFFATALITIESOCCURRINGWITHIN24HOFANACCIDENTTO5,500ORLESSBY2008ANDTO5,000ORLESSBY2010CABINETOFFICE,GOVERNMENTOFJAPAN,2006CONSEQUENTLY,THEANNUALNUMBEROFROADTRAFFICFATALITIESWAS5,197IN2008AND4,922IN2010NATIONALPOLICEAGENCYSTATISTICS,2013THEIRGOALWASACHIEVEDHENCEFORTH,THENINTHFUNDAMENTALTRAFFICSAFETYPROGRAM,COVERINGFIVEYEARSFROMFY2011TOFY2015,AIMSTOREDUCETHEANNUALNUMBEROFFATALITIESTHATOCCURWITHIN24HOFANACCIDENTTO3,000ORLESSBY2015CABINETOFFICE,GOVERNMENTOFJAPAN,2011ITISMOREDIFFICULTTOREDUCETHENUMBEROFFATALITIESFROM5,000TO3,000ORLESSTHEREFORE,INTEGRATEDSAFETYCOUNTERMEASURESTHATCONSIDERTRAFFICENGINEERINGPROCESSES,DRIVERSPSYCHOLOGY,ANDVEHICLEBEHAVIORAREVERYIMPORTANTITSANDAISAREALSOIMPORTANTINADDITION,THEREAREBLACKSPOTSWHEREACCIDENTSOCCURREDANDSAFETYCOUNTERMEASURESWEREIMPLEMENTEDREPEATEDLYINA“VICIOUSCIRCLE”FORSUCHACCIDENTBLACKSPOTS,AMOREEFFECTIVETRAFFICSAFETYPROGRAMISREQUIREDTHISPAPERPROPOSESANINTEGRATEDTRAFFICSAFETYCOUNTERMEASURETHATTAKESINTOACCOUNTDRIVERSPSYCHOLOGYANDVEHICLEENGINEERINGITALSOSTUDIESHOWACCIDENTSOCCURTHECONTENTSOFTHISARTICLEAREORGANIZEDASFOLLOWSSECTION2PROPOSESTHEINTEGRATEDSAFETYCOUNTERMEASUREASONEOFTHENEXTGENERATIONCOUNTERMEASURESSECTION3BRIEFLYREVIEWSTHERELATEDLITERATURESECTION4INTRODUCESASACASESTUDYANACCIDENTBLACKSPOTATTHESANNOHCORNERONNAGOYAEXPRESSWAYINJAPANANDASHORTHISTORYFORIMPLEMENTINGSAFETYCOUNTERMEASURESTHERESECTION5DEMONSTRATESTHEOBSERVEDTRAFFICCONDITIONSANDASENSITIVITYANALYSISOFCENTRIFUGALFORCESFORSPEEDANDTURNINGGYRATIONATTHECORNERSECTION6SHOWSTHEFRICTIONCIRCLEOFTIRESANDDISCUSSESTHECATASTROPHEOFASERIESOFEVENTSASTHEACCIDENTOCCURRENCEMECHANISMSECTION7DEMONSTRATESTHEDRIVINGEXPERIMENTSATTHECORNERUSINGEYEMARKRECORDEREMRSECTION8PRESENTSTHECONCLUSIONS2LITERATUREREVIEWMANYRESEARCHERSHAVESTUDIEDACCIDENTRISKSWITHINVARIOUSSTATESOFTRAFFICOTHERRESEARCHERSHAVEEMPLOYEDCONFLICTANALYSISANDMETHODSFROMOTHERDISCIPLINESTOSTUDYTHERISKOFACCIDENTSOCCURRINGONHIGHWAYSINOUEETAL1978SHOWEDTHATASINGLEVEHICLEACCIDENTTENDSTOOCCURINANONCONGESTEDTRAFFICCONDITION,ANDTHATAMULTIVEHICLEACCIDENTTENDSTOOCCURINCONGESTEDTRAFFICCONDITIONSOFTHEHANSHINEXPRESSWAYTHEYALSOSHOWEDTHATTHEACCIDENTOCCURRENCERATEISHIGHERINCONGESTEDTRAFFICTHANINNONCONGESTEDTRAFFICHIKOSAKAANDNAKAMURA2001EXPLAINEDTHEACCIDENTOCCURRENCERISKBYTHETRAFFICFLOWRATEANDHIGHWAYCAPACITYFORTHETOMEIEXPRESSWAYOHGUCHIETAL2004SHOWEDTHATTHEACCIDENTOCCURRENCERISKISHIGHERINACRITICALTRAFFICSTATE,IE,AHIGHDENSITYNONCONGESTEDTRAFFICSTATE,FORTHETOMEIEXPRESSWAYOTHERSTUDIESHAVEPROPOSEDMETHODSBASEDONCONFLICTANALYSIS,SUCHASTHETIMETOCOLLISIONTTCINDEX,POSTENCROACHMENTTIMEPETINDEX,POTENTIALTIMETOCOLLISIONPTTCINDEX,ANDOTHERINDICESHAYWARD1972PROPOSEDUSINGTHETTCINDEXTTCISDEFINEDASTHETIMETOCOLLISIONIFTHETWOVEHICLESCONTINUETODRIVEATTHESAMESPEEDANDINTHESAMEDIRECTIONWITHOUTANYEVASIVEBEHAVIORALLEN,SHIN,ANDCOOPER1978PROPOSEDUSINGTHEPETINDEXPETISDEFINEDASTHETIMEFROMTHEENDOFENCROACHMENTTOTHETIMETHATTHETHROUGHGOINGVEHICLEARRIVESATTHEPOTENTIALPOINTOFCOLLISIONINOTHERWORDS,THEPOTENTIALSITEOFCOLLISIONISFIRSTDETERMINEDWHENVEHICLE1OCCUPIESACERTAINPOSITIONATACERTAINTIMEPETISDEFINEDASTHETIMETAKENFORVEHICLE2TOREACHTHEIDENTIFIEDSITEWAKABAYASHIETAL2003,WAKABAYASHIANDRENGE2003,ANDWAKABAYASHIANDMURAMATSU2007PROPOSEDUSINGTHEPTTCINDEXTHISISANIFTHENTYPEOFINDICATOR,IE,IFTHELEADINGVEHICLEEVADESA92HIROSHIWAKABAYASHIETAL/TRANSPORTATIONRESEARCHPROCEDIA320149099DANGEROUSOBJECTANDDECELERATES,ANDIFTHEREARVEHICLEISFOLLOWINGCLOSELYINTHESAMELANE,THENTHEPTTCISDEFINEDASTHERAPIDEVASIVEACTIONSTHATTHEFOLLOWINGVEHICLENEEDSTOTAKETOAVOIDACOLLISIONTHEPTTCINDEXISSUITABLEFORHIGHSPEEDANDCONGESTEDTRAFFICYOSHIIETAL2011ANALYZEDTHECOMPLEXFACTORS,IE,ATRAFFICFLOWFACTOR,AHIGHWAYGEOMETRICDESIGNFACTOR,ANDANENVIRONMENTALFACTOR,THATAFFECTTHEACCIDENTOCCURRENCERISKDURINGREARENDCOLLISIONS,OTHERMULTIVEHICLECOLLISIONS,ANDCOLLISIONSWITHFACILITIESONTHESIDEOFHIGHWAYSORURBANORINTRACITYEXPRESSWAYSHOWEVER,ATTHE“VICIOUSCIRCLE”ACCIDENTBLACKSPOTSWHEREACCIDENTSOCCURANDSAFETYCOUNTERMEASURESAREREPEATEDLYPERFORMED,TRAFFICACCIDENTSCANNOTBEEXPLAINEDONLYBYTRAFFICFACTORSATSUCHSPOTS,SAFETYCOUNTERMEASURESSHOULDBEPERFORMEDACCOMPANIEDBYVEHICLEENGINEERINGANDTRAFFICPSYCHOLOGYSUPPORTSTHEREISLITTLESTUDYFOCUSINGONTHISINJAPANTHEREFORE,ITWASIMPORTANTTOCOMBINEVEHICLEENGINEERINGANDTRAFFICPSYCHOLOGYAPPROACHESINTHISRESEARCH3INTEGRATINGHIGHWAY,VEHICLE,ANDHUMANTRAFFICSAFETYMANAGEMENTFORSUSTAINABLESAFETYASSTATEDINTHEINTRODUCTION,ADEPLETIONEFFECTFORTRAFFICSAFETYISEXPECTED,BECAUSEITISMOREDIFFICULTTOREDUCEALOWERNUMBEROFACCIDENTFATALITIESTHANAHIGHERNUMBEROFACCIDENTFATALITIES,IE,REDUCING5,000OCCURRENCESTO3,000ISMOREDIFFICULTTHANREDUCING7,000OCCURRENCESTO5,000TRAFFICSAFETYMANAGEMENTSHOULDINTEGRATEASPECTSFROMTHEHIGHWAY,VEHICLE,ANDHUMANSAFETYMANAGEMENTCONSERVATIVEANDCONVENTIONALTRAFFICSAFETYCOUNTERMEASURESHAVEBEENPERFORMEDFROMONLYONEASPECT,IE,BYCONSIDERINGSAFETYIMPROVEMENTSONLYFORTHEHIGHWAY,VEHICLES,OROTHERSINGLEASPECTSHOWEVER,ATTHETRAFFICACCIDENTBLACKSPOTS,AFTERTRAFFICSAFETYCOUNTERMEASURESWEREPERFORMEDANDTHENUMBEROFTRAFFICACCIDENTSDECREASED,SOONAFTERTHENUMBEROFTRAFFICACCIDENTSINCREASESAGAINFORSUCHACCIDENTBLACKSPOTS,ITISIMPORTANTTOINTEGRATETHESCIENTIFICFINDINGSFROMVARIOUSFIELDSANDSEEKSUPPORTFROMTHESEFIELDS,SUCHASTRAFFICENGINEERING,VEHICLEENGINEERING,ANDTRAFFICPSYCHOLOGY,TOACHIEVEAMOREEFFECTIVEANDSUSTAINABLETRAFFICSAFETYMEASURE,ASSHOWNINFIGURE1INTHENEXTCHAPTER,THECASESTUDYFORTHISIDEAISINTRODUCEDFIGURE1THREERELATEDFIELDSTHATAFFECTTRAFFICSAFETY4ACCIDENTBLACKSPOTASCASESTUDYTHEACCIDENTBLACKSPOTCHOSENFORTHECASESTUDYISLOCATEDONTHECENTRALRINGROUTEOFTHENAGOYAEXPRESSWAYINTHECITYOFNAGOYAINCENTRALJAPANNAGOYAISLOCATEDBETWEENTOKYOANDOSAKATHENAMEOFTHEACCIDENTBLACKSPOTISSANNOHSHARPCURVECORNERANDISLOCATEDONTHESOUTHWESTSECTIONOFTHERINGROUTESHOWNINFIGURE2INTHECURVE,LANESWEREADDEDINAUGUST,2007BYINCREASINGTWOLANESTOTHREELANESTOMITIGATEUSUALCONGESTIONTHEREFORE,WHILETHECONGESTIONWASRESOLVED,THENUMBEROFACCIDENTSSTEEPLYINCREASEDONTHETHIRDLANERIGHTMOSTLANEALTHOUGHTRAFFICSAFETYCOUNTERMEASURESWEREPERFORMED,THEIREFFECTSWERETEMPORARYMOTEGIETAL,2010FIGURE3DEMONSTRATESTHELONGITUDINALTRANSITIONOFTHENUMBEROFACCIDENTSANDTRAFFICSAFETYCOUNTERMEASURESFROMAPRIL2007TOMARCH2011THECOUNTERMEASURESWEREPERFORMEDINTHEFOLLOWINGTHREEPHASESAFTERTHENUMBEROFLANESWASINCREASEDFROMTWOTOTHREEDURINGAUGUST2007,THEACCIDENTRATERAPIDLYHIGHWAYTRAFFICENGINEERINGVEHICLEVEHICLEENGINEERINGHUMANPSYCHOLOGYANDEDUCATIONOTHERRELATEDFIELDS93HIROSHIWAKABAYASHIETAL/TRANSPORTATIONRESEARCHPROCEDIA320149099INCREASEDTHUS,BARRIERLINESFORREDUCINGSPEED,EXTENSIONSOFTHEESCORTLINE,ANDAHIGHINTENSITYREFLECTIVESHEETWEREINSTALLEDASTHEFIRSTPHASEOFSAFETYCOUNTERMEASURESDURINGJULY2008CONSEQUENTLY,THENUMBEROFACCIDENTSINITIALLYDECREASEDBEFOREANDAFTERTHEFIRSTPHASEOFCOUNTERMEASURES,THENAGOYAEXPRESSWAYPUBLICCORPORATIONMEASUREDTHEEFFECTOFTHECOUNTERMEASURESANDINVESTIGATEDTHEFACTORSTHATLEDTOACCIDENTS,SUCHASANALYZINGCHANGESINACCIDENTRATES,ANALYZINGCHANGESINDRIVINGSPEEDSATTHECORNER,STUDYINGTHEBEHAVIOUROFRISKTAKINGVEHICLESBYVIDEOMONITORING,ANDMEASURINGTHESKIDRESISTANCEONTHEPAVEMENTHOWEVER,THENUMBEROFACCIDENTSRAPIDLYINCREASEDAGAIN,STARTINGINMAY2009ATTHATTIME,ADDITIONALSAFETYCOUNTERMEASURESWEREINSTALLEDASTHESECONDPHASEIMPROVEMENTSWITHTHECARRIAGEWAYMARKINGFORTHETHIRDFIGURE5LONGITUDINALTRANSITIONOFNUMBEROFACCIDENTANDSAFETYCOUNTERMEASURESFROMAPRIL2007TOMARCH2011RSTRSVSUTTTRYTVSSSSUXRTSRTSRRRSSWRSRRRRSRSVSUTRSTTTRRTURRRSUSTSTVSTUTUSZSRVSVRRVSUUUYSSSSUSRSSWSUUWRUSSRSRSSSSRXYWVURRRRWSRSWTRRWSRSWTRTRRYTRRZTRRTRSRTRSSLANEADDITIONFROM2TO3BARRIERLINESEXTENSIONSOFTHEESCORTLINEHIGHINTENSITYREFLECTIVESHEETREMOVINGZEBRALINEGROOVINGSKIDLINEMISTGRIPRESINMORTARWARNIGSIGNBOARDFIGURE2ACCIDENTBLACKSPOTINNAGOYAEXPRESSWAYFIGURE3IMAGEJUST05SECONDSBEFORECOLLISIONFIGURE4MANYVEHICLESRUNINSIDETHECORNERATTHESAMEPLACEASSHOWNINFIGS3AND694HIROSHIWAKABAYASHIETAL/TRANSPORTATIONRESEARCHPROCEDIA320149099PHASEOFCOUNTERMEASURES,COLOREDRESINMORTAR,MISTGRIPPAVEMENT,ANDACAUTIONSIGNBOARDWEREINSTALLEDDURINGSEPTEMBERANDOCTOBER2009HOWEVER,THENUMBEROFACCIDENTSONWETPAVEMENTSHARPLYINCREASED,STARTINGINMAY2011NAGOYAEXPRESSWAYETAL,2012FIGURE3SHOWSANIMAGEOFATYPICALACCIDENTOCCURRINGATTHESANNOHCORNERJUST05SECONDSBEFORETHECOLLISIONDRIVINGALONGTHEINNERLANEOFTHECORNERCAUSESTHEVEHICLETOSPINOUTOFCONTROLANDCOLLIDEAGAINSTTHEINNERWALLASSUMINGTHATTHEDRIVERSVIEWPOINTWASTHEESSENTIALCAUSEFORSUCHANACCIDENTATTHISCORNER,MANYVEHICLESTENDTOBEDRIVENINTHEINNERLANEORTHEINNERSHOULDERBEYONDTHEINNERLANEMARKINGSONTHETHIRDLANE,ASSHOWNINFIG4THETRAFFICSPEEDANDRUNNINGPASSAGEPOSITIONONTHELANEWEREOBSERVEDFOREACHLANE,ANDTHEYAREREPORTEDINSECTION5ATTHESANNOHCORNER,48ACCIDENTSOCCURREDDURINGEIGHTMONTHSFROMAPRILTONOVEMBER,2008THEACCIDENTOCCURRENCERATEWAS85ANDWASCONCENTRATEDNEARTHECORNEREXITOF40KP,WHERE“KP”ISAKILOMETERPOSTOFMILESTONE,ASSHOWNINFIG6NAGOYAEXPRESSWAYETAL,2013THEMAJORITYOFACCIDENTS29WERECOLLISIONSWITHROADSIDEFACILITIES,ASALSOSHOWNINFIG6FURTHERMORE,DURINGONEMONTH,JUNE2008,14SIMILARHADACCIDENTSOCCURRED,PARTICULARLYONAWETPAVEMENTBECAUSETHISCORNERISANIMPORTANTPARTOFTHECENTRALRINGROUTE,AFTERANACCIDENTOCCURS,ITCAUSESNOTONLYLOSSOFHUMANLIFEBUTALSOADDITIONALACCIDENTS,ANDLOSSOFTIMEFORTRAVELERSWHOARESTUCKINTHETRAFFICCONGESTIONTHEREFORE,SINCEANACCIDENTCAUSESSUCHDAMAGEANDLOSS,EFFECTIVEANDSUSTAINABLETRAFFICSAFETYMEASUREMENTSISVERYIMPORTANT5TRAFFICSPEEDANDRUNNINGPASSAGEPOSITIONANDITSSENSITIVITYANALYSISTHETRAFFICSPEEDANDRUNNINGPASSAGEPOSITIONWEREOBSERVEDONEACHLANEATTHESANNOHCORNERUSINGVIDEOMONITORINGSAMPLINGFROM900AMTONOONON13SEPTEMBER,2011THENUMBEROFOBSERVEDVEHICLESWAS5,080THEDISTRIBUTIONOFSPEEDWASCALCULATEDFROMTHEDIFFERENCEINTIMESBETWEENSECTIONSAANDC,SECTIONSCANDD,ANDSECTIONSDANDE,ASSHOWNINFIG10THEDISTRIBUTIONOFRUNNINGPASSAGEPOSITIONSWASCOLLECTEDUSINGSIXCONDITIONS1DRIVINGONTHEINNERSIDEBEYONDTHEINNERLANEMARKING,2DRIVINGONTHEINNERLANEMARKING,3DRIVINGNEARTHEINNERLANEMARKING,4DRIVINGINTHECENTERLANE,5DRIVINGBETWEENTHECENTERANDOUTERLANES,AND6DRIVINGOUTSIDETHEOUTERLANEMARKINGSTHEFOLLOWINGRESULTSCONCERNINGSPEEDSANDRUNNINGPASSAGEPOSITIONSWEREOBSERVEDATTHESANNOHCORNER37KP38KP39KP40KP41KPREARENDERS1REARENDERS2COLLISIONSTOFACILITIES2REARENDERS4MUTUALCOLLISIONS1COLLISIONS5ROLLANDROLLOVERS1COLLISIONSTOFACILITIES29OTHERS1TOTAL41COLLISIONSTOFACILITIES285OFTHEWHOLEFIGURE6LOCATIONSWHEREACCIDENTSOCCUR95HIROSHIWAKABAYASHIETAL/TRANSPORTATIONRESEARCHPROCEDIA32014909951DISTRIBUTIONOFSPEEDANDRUNNINGPASSAGEPOSITION1THESPEEDONTHETHIRDLANEISHIGHESTFORCORNERENTRYSPEEDSBETWEENSECTIONSAANDCANDATTHEMIDPOINTOFTHECORNERBETWEENSECTIONSCANDDSEEFIGURES7,8,AND102VEHICLESONEVERYLANESLOWEDDOWNINTHECORNERSECTION,ANDACCELERATEDINTHESTRAIGHTSECTIONBETWEENSECTIONSDANDEAFTERDISCHARGINGFROMTHECORNERSEEFIGURES7,8,AND103ONTHETHIRDLANE,APPROXIMATELY79OFTHEVEHICLESWERERUNNINGONTHEINNERSIDEOFTHELANEATSECTIONCATTHEENTRYOFSECTIONB,THESAMETENDENCYWASOBSERVEDSEEFIGURES9AND104ONTHETHIRDLANE,APPROXIMATELY33OFTHEVEHICLESWERERUNNINGONTHEINNERSIDEBEYONDTHEINNERLANEMARKINGSANDALSOONTHEINNERLANEMARKINGSEEFIGURES9AND105ONTHEFIRSTANDSECONDLANES,MANYVEHICLESTENDEDTORUNINTHECENTERLANEASCOMPAREDWITHTHETHIRDLANE52SENSITIVITYANALYSISOFCENTRIFUGALFORCEBYCOMPONENTOFSPEEDANDRADIUSINGREDIENTTHEEFFECTOFTHEINCREASEOFRISKCAUSEDBYTHEINCREASEINSPEEDINTHECORNERANDBYRUNNINGINSIDETHECORNERISEVALUATEDASFOLLOWSTHECENTRIFUGALFORCEGISGIVENBYRMVG/2,1WHEREM,V,ANDRAREMASS,SPEED,ANDRADIUSTOSIMPLIFY,LET1MPARTIALDIFFERENTIALOFEQ1BYTHECOMPONENTOFVELOCITYANDINVERSERADIUSINGREDIENTGIVESRVVG2WW,2AND22RVRGWW310009008208007006311311411500020406081012143RDLANE2NDLANE1STLANESECTACSECTCDSECTDE10009008508107006411311811800020406081012143RDLANE2NDLANE1STLANESECTACSECTCDSECTDEFIG7RATIOOFAVERAGESPEEDATSANNOHCORNERFIG8RATIOOF85PERCENTILESPEEDATSANNOHCORNER02004006008001,0001,200ONTHEINNERSIDEBEYONDTHEINNERLANEMARKINGONTHEINNERLANEMARKINGNEARTHEINNERLANEMARKINGINTHECENTERLANEBETWEENTHECENTERANDOUTERLANESOUTSIDETHEOUTERLANEMARKING233326769259983631103573814462777150215003RDLANE2NDLANE1STLANENUMBEROFVEHICLESFIG9RUNNINGPASSAGEPOSITIONSATSANNOHCORNERFIG10SANNOHCORNERANDSECTIONSAEFORSPEEDANDPASSAGEPOSITIONANALYSISSECTIONASECTIONBSECTIONCSECTIONDSECTIONE96HIROSHIWAKABAYASHIETAL/TRANSPORTATIONRESEARCHPROCEDIA320149099BECAUSETHEUNITSYSTEMSDIFFER,COMPARISONISDIFFICULTTHEREFORE,THEEQUIVALENTINCREASEINRUNNINGSPEEDINTHECORNERISCALCULATEDFROMTHERUNNINGSPEEDONTHEINNERSIDETHUS,EVALUATIONOFATRAFFICSAFETYCOUNTERMEASUREFORRUNNINGTHECORNERCANBEEVALUATEDALTHOUGHTHESPEEDLIMITIS50KM/HFORTHISCORNER,MANYRATESOFSPEEDAREASSUMEDFROM50KM/HTO90KM/H,ANDTHEVEHICLEPASSAGERADIUSISGIVENFROM90MTO110MAGAINSTTHECENTRALRADIUSOF100MAPARTOFCALCULATIONRESULTFROMEQ2ISSHOWNINTABLE1INTABLE1,SPEEDISSHOWNINTHEHORIZONTALDIRECTIONANDTHEPASSAGERADIUSISSHOWNINTHEVERTICALDIRECTIONTHECENTRIFUGALFORCEIS2500AT50KM/HSPEEDANDA100MRADIUS,2704AT52KM/HANDA100MRADIUS,AND2717AT50KM/HANDA92MRADIUSTHESERESULTSSUGGESTTHATTHEINNER8MPASSAGEISEQUIVALENTTOTHE2KM/HINCREASEINSPEEDINTHESAMERADIUSAT50KM/HINADDITION,CENTRIFUGALFORCEIS3600AT60KM/HANDA100MRADIUS,3844AT62KM/HANDA100MRADIUS,AND3830AT60KM/HANDA94MRADIUSTHESERESULTSSUGGESTTHATTHEINNER6MPASSAGEISEQUIVALENTTOTHE2KM/HINCREASEINSPEEDINTHESAMERADIUSAT60KM/HSPEEDTHESENSITIVITYISAPPROXIMATELY41AT50KM/HANDAPPROXIMATELY31AT60KM/HWHENTHESPEEDIS90KM/H,THESENSITIVITYISAPPROXIMATELY21THISINDICATESTHATJUSTRUNNINGINSIDEATAHIGHSPEEDISTAKINGARISKFORASLIPPINGACCIDENTWHILECORNERINGTHEREFORE,NOTONLYSPEEDREDUCTIONBUTALSOPROHIBITINGVEHICLESFROMRUNNINGINSIDETHELANEMARKINGSISIMPORTANTATTHECORNERTABLE1SENSITIVITYANALYSISOFCENTRIFUGALFORCEBYCOMPONENTOFSPEEDANDRADIUSINGREDIENT6FRICTIONCIRCLEOFTIREANDACCIDENTOCCURRENCEMECHANISMTHEESSENTIALMECHANISMFORACCIDENTOCCURRENCEINHIGHWAYFACILITIESATCORNERSISTHESYNERGYTOTHECATASTROPHEWITHTHREEFACTORSOFHIGHWAYGEOMETRICDESIGN,DRIVERSREACTION,ANDVEHICLEBEHAVIORA“FRICTIONCIRCLE”OFTIREISTHEKEYCONCEPTFOREXPLAININGRATIONALACCIDENT
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 2022-2023学年上海宝山区七年级(上)第二次月考语文试题及答案
- 应急及安全管理培训课件
- 2024-2025学年度中级软考综合提升测试卷附答案详解(满分必刷)
- 强化训练-人教版7年级数学上册期中试题及答案详解
- 卖水果的合同(标准版)
- 设计转包合同(标准版)
- 2024年安全员考试模拟试题含答案详解(新)
- 2025年海洋生态保护与修复政策对海洋生态系统服务功能可持续性优化报告
- 2025年教育行业投资并购趋势与教育产业投资前景报告
- 2025年工业污染源全面达标排放与环保人才培养计划
- 2025劳动合同范本下载
- 2025-2026学年高二上学期数学第一次月考立体几何卷全解析【测试范围:沪教版2020必修第三册第十章】(上海专用)
- Unit 3 Places we live in单元整体公开课一等奖创新教学设计表格式(5课时)
- 2025年4月自考02204经济管理试题及答案
- 统战工作培训课件
- 泡茶的步骤课件
- 人教版(2024)八年级上册数学全册教案
- 《无机化学》第六版 课件 0绪论
- 水利建筑工程概算定额(上册)2025版
- 煤矿冲击地压培训课件
- 安徽省2021-2023年中考满分作文45篇
评论
0/150
提交评论