道路桥梁专业事故分析与预防毕业论文外文文献翻译及原文.docx
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道路桥梁专业事故分析与预防毕业论文外文文献翻译及原文.docx
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道路桥梁专业事故分析与预防毕业论文外文文献翻译及原文
毕业设计(论文)
外文文献翻译
文献、资料中文题目:
事故分析与预防
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道路桥梁
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翻译日期:
2017.02.14
AccidentAnalysisandPrevention
Thispaperdescribesaprojectundertakentoestablishaself-explainingroads(SER)designprogrammeonexistingstreetsinanurbanarea.Themethodologyfocussedondevelopingaprocesstoidentifyfunctionalroadcategoriesanddesignsbasedonendemicroadcharacteristicstakenfromfunctionalexemplarsinthestudyarea.Thestudyareawasdividedintotwosections,onetoreceiveSERtreatments
designedtomaximisevisualdifferencesbetweenroadcategories,andamatchedcontrolareatoremainuntreatedforpurposesofcomparison.TheSERdesignforlocalroadsincludedincreasedlandscapingandcommunityislandstolimitforwardvisibility,andremovalofroadmarkingstocreateavisuallydistinctroadenvironment.Incomparison,roadscategorisedascollectorsreceivedincreaseddelineation,additionofcyclelanes,andimprovedamenityforpedestrians.Speeddatacollected3monthsafterimplementationshowedasignificantreductioninvehiclespeedsonlocalroadsandincreasedhomogeneityofspeedsonbothlocalandcollectorroads.Theobjectivespeeddata,combinedwithresidents’speedchoiceratings,indicatedthattheprojectwassuccessfulincreatingtwodiscriminablydifferentroadcategories.2010ElsevierLtd.Allrightsreserved.
1.Introduction
1.1.Background
Changingthevisualcharacteristicsofroadstoinfluencedriverbehaviourhascometobecalledtheself-explainingroads(SER)approach(Theeuwes,1998;TheeuwesandGodthelp,1995;Rothengatter,1999).Sometimesreferredtoassustainablesafety,asappliedintheNetherlands,thelogicbehindtheapproachistheuseofroaddesignsthatevokecorrectexpectationsanddrivingbehavioursfromroadusers(Wegmanetal.,2005;Welleretal.,2008).TheSERapproachfocusesonthethreekeyprinciplesoffunctionality,homogeneity,andpredictability(vanVlietandSchermers,2000).Inpractice,functionalityrequiresthecreationofafewwell-definedroadcategories(e.g.,throughroads,distributorroads,andaccessroads)andensuringthattheuseofaparticularroadmatchesitsintendedfunction.Multifunctionalroadsleadtocontradictorydesignrequirements,confusioninthemindsofdrivers,andincorrectexpectationsandinappropriatedrivingbehaviour.Clearlydefinedroadcategoriespromotehomogeneityintheiruseandpreventlargedifferencesinvehiclespeed,direction,andmass.Finally,predictability,orrecognisability,meanskeepingtheroaddesignandlayoutwithineachcategoryasuniformaspossibleandclearlydifferentiatedfromothercategoriessothatthe
functionofaroadiseasilyrecognisedandwillelicitthecorrectbehaviourfromroadusers.TheSERapproachhasbeenpursuedtothelargestextentintheNetherlandsandtheUnitedKingdombutithasalsobeenofsomeinterestinNewZealand.In2004,theNationalRoadSafetyCommitteeandtheMinistryofTransportarticulatedanewNationalSpeedManagementInitiativewhichstated“Theemphasisisnotjustonspeedlimitenforcement,itincludesperceptualmeasuresthatinfluencethespeedthatadriverfeelsisappropriateforthesectionofroaduponwhichtheyaredriving–ineffectthe‘selfexplainingroad”’(NewZealandMinistryofTransport,2004).
Incognitivepsychologicalterms,theSERapproachattemptstoimproveroadsafetyviatwocomplementaryavenues.Thefirstistoidentifyanduseroaddesignsthatafforddesirabledriverbehaviour.Perceptualpropertiessuchasroadmarkings,delineatedlanewidth,androadsideobjectscanfunctionasaffordancesthatserveasbuiltininstructionsandguidedriverbehaviour,eitherimplicitlyorexplicitly(Charlton,2007a;Elliottetal.,2003;Welleretal.,2008).Thisworkismoreorlessadirectdevelopmentofworkonperceptualcountermeasures,perceptualcuesintheroadingenvironmentthatimplyorsuggestaparticularspeedorlaneposition,eitherattentionallyorperceptually(Charlton,2004,2007b;Godleyetal.,1999).AsecondaspectoftheSERapproachistoestablishmentalschemataandscripts,memoryrepresentationsthatwillallowroaduserstoeasilycategorisethetypeofroadonwhichtheyare.
1.2.Localisedspeedmanagement
Thetraditionalapproachestoimprovingspeedmanagement,trafficcalmingandlocalareatrafficmanagement(LATM)havefocussedontreatingspecificproblemlocationsor“blackspots”inresponsetocrashoccurrencesorcomplaintsfromthepublic(Ewing,1999).Apotentialdisadvantageoftheseapproachesisthataddressingtheproblemwithlocalisedtreatmentscanleadtoare-emergenceoftheproblematanotherlocationnearby.Further,whenappliedinappropriately,localisedapproachesmayaddresstheproblemfromonlyoneperspective,withoutconsideringtheimpactonothertypesofroadusersorresidents.Whentrafficcalmingtreatmentsrelyonphysicalobstaclessuchasspeedhumpstheycanbeveryunpopularwithbothresidentsandroadusersandcancreatenewproblemsassociatedwithnoise,maintenance,andvandalism(Martensetal.,1997).
FromanSERperspective,treatmentsthatarehighlylocalizedoridiosyncraticmaydomoreharmthangoodbyaddingtothemultiplicityofroadcategoriesanddriveruncertainty,ratherthanbuildingdriverexpectationsaroundafewuniformroadtypes.Insteadofconsideringasinglelocationinisolation,SERroaddesignsareconsideredwithinahierarchyofroadfunctions;e.g.,accessroads,collectorroads,andarterialroads.AlthoughSERschemesmayemployphysicaldesignelementsusedintrafficcalmingschemes(e.g.,roadnarrowingwithchicanesandaccesscontrols)theyalsoemployarangeofmorevisuallyorientedfeaturessuchasmedianandedgelinetreatments,roadmarkings,pavementsurfaces,androadsidefurniture.ForaneffectiveSERschemeitisimportanttoselectthecombinationoffeaturesthat
willaffordthedesireddriverspeedsandtoensuretheirconsistentusetoformdistinctcategoriesofroadtypes(vanderHorstandKaptein,1998;Wegmanetal.,2005).roadcategorythatwouldmeetthethreeSERprinciplesoffunctional
use,homogeneoususe,andpredictableuse.Herrstedt(2006)reportedontheuseofastandardisedcatalogueoftreatmentscompiledfromresearcherandpractitioneradvice.GoldenbeldandvanSchagen(2007)usedasurveytechniquetodetermineroadcharacteristicsthatminimisethedifferencebetweendrivers’ratingsofpreferredspeedandperceivedsafespeedandselectroadfeaturesthatmakepostedspeeds“credible”.AartsandDavidse(2007)usedadrivingsimulatortoverifywhetherthe“essentialrecognisabilitycharacteristics”ofdifferentroadclassesconformedtotheexpectationsofroadusers.Welleretal.(2008)employedarange
ofstatisticaltechniques,includingfactoranalysisandcategoricalclusteringtoestablishtheroadcharacteristicsthatdriversusetocategorisedifferentroadtypes.ThepracticaldifficultiesofimplementinganSERsystemthusbecomeamatteroffindinganswerstoaseriesofquestions.Howdoesonecreateadiscriminableroadhierarchyforanexistingroadnetwork?
Whatroadcharacteristicsshouldbemanipulatedtoestablishcategory-definingroadfeatures?
HowcanSERroadfeaturesandselectionmethodsbemaderelevantandappropriateforalocalcontext?
(RoaddesignsappropriateforTheNetherlandswouldnotbesuitableinNewZealand,inspiteofitsname.)Asurveyofnationalandinternationalexpertopinioninorderestablishcategory-definingroadfeaturesforNewZealandroadsrevealedthattheregionalcharacterandlocaltopographyofroadsoftenundercuttheusefulnessofanystandardisedcatalogueofdesigncharacteristics(CharltonandBaas,2006).
1.4.Goalsofthepresentproject
TheprojectdescribedinthispapersoughttodevelopanddemonstrateanSERprocessbasedonretrofittingexistingroadstoestablishaclearmulti-levelroadhierarchywithappropriatedesignspeeds,ensuringthateachlevelinthehierarchypossessedadifferent“lookandfeel”.RatherthantransferringSERdesigns
alreadyinuseinternationally,theprojectattemptedtodevelopamethodthatwouldbuildonthefeaturesofroadsinthelocalarea;extendingroadcharacteristicswithdesirableaffordancestootherroadslackingthemandcreatingdiscriminableroadcategoriesintheprocess.Ofinterestwaswhethersuchaprocesscouldproducecost-effectivedesignsandwhetherthosedesignswouldbeeffectiveincreatingdifferentroaduserexpectationsanddistinctspeedprofilesforroadsofdifferentcategories.
2.Methods
Theresearchmethodology/SERdesignprocessdevelopedforthisprojectprogressedthroughaseriesoffivestages:
(1)selectionofstudyarea;
(2)identificationoftheroadhierarchy;(3)analysisoftheroadfeatures;(4)developmentofadesigntemplate;and(5)implementationandevaluationoftheSERtreatments.Eachofthestagesisdescribedinthesectionsthatfollow.
2.1.Selectionofstudyarea
Thestudyareaforthisproject(PtEngland/GlenInnesinAuckland)wasselectedinconsultationwithaprojectsteeringgroupcomprisedofrepresentativesfromtheMinistryofTransport,NewZealandTransportAgency,NewZealandPolice,andotherlocaltransportandurbanagencies.Thestudyareawasanestablishedneighbourhoodcontainedamixofprivateresidences,smallshops,schools,andchurches,andwasselected,inpart,becauseofitshistoryofcyclist,pedestrianandlossofcontrolcrashes,almosttwicethenumber。
2.MethodsTheresearchmethodology/SERdesignprocessdevelopedforthisprojectprogressedthroughaseriesoffivestages:
(
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