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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,AMOREEFFECTIVETRAFFICSAFETYPROGRAMISREQUIREDTHISPAPERPROPOSESANINTEGRATEDTRAFFICSAFETYCOUNTERMEASURETHATTAKESINTOACCOUNTDRIVERSPSYCHOLOGYANDVEHICLEENGINEERINGITALSOSTUDIESHOWACCIDENTSOCCURTHECONTENTSOFTHISARTICLEAREORGANIZEDASFOLLOWSSECTION2PROPOSESTHEINTEGRATEDSAFETYCOUNTERMEASUREASONEOFTHENEXTGENERATIONCOUNTERMEASURESSECTION3BRIEFLYREVIEWSTHERELATEDLITERATURESECTION4INTRODUCESASACASESTUDYANACCIDENTBLACKSPOTATTHESANNOHCORNERONNAGOYAEXPRESSWAYINJAPANANDASHORTHISTORYFORIMPLEMENTINGSAFETYCOUNTERMEASURESTHERESECTION5DEMONSTRATESTHEOBSERVEDTRAFFICCONDITIONSANDASENSITIVITYANALYSISOFCENTRIFUGALFORCESFORSPEEDANDTURNINGGYRATIONATTHECORNERSECTION6SHOWSTHEFRICTIONCIRCLEOFTIRESANDDISCUSSESTHECATASTROPHEOFASERIESOFEVENTSASTHEACCIDENTOCCURRENCEMECHANISMSECTION7DEMONSTRATESTHEDRIVINGEXPERIMENTSATTHECORNERUSIN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TSIDETHEOUTERLANEMARKING233326769259983631103573814462777150215003RDLANE2NDLANE1STLANENUMBEROFVEHICLESFIG9RUNNINGPASSAGEPOSITIONSATSANNOHCORNERFIG10SANNOHCORNERANDSECTIONSAEFORSPEEDANDPASSAGEPOSITIONANALYSISSECTIONASECTIONBSECTIONCSECTIONDSECTIONE96HIROSHIWAKABAYASHIETAL/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

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