Economic Evaluation of Advanced Winter Highway Maintenance Strategies

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1、37SmithandZogg1998TRANSPORTATIONCONFERENCEPROCEEDINGSEconomicEvaluationofAdvancedWinterHighwayMaintenanceStrategiesDUANEE.SMITHANDJEFFREYA.ZOGGHighwayagenciesfacedemandstomaintainorimprovetheexistingandeffectivedeicing,however,sometimesresultsinindiscrimi-winterroadwaylevelofservice.Thebene

2、fitsofadvancedwinterhigh-natesalting.However,newdevelopmentsinwintermaintenancewaymaintenancestrategiesnowbecomemoreattractive.Thispaperincludingdeicerapplicationtechniques(e.g.saltprewetting),plow-examinesthepotentialbenefitsofapplyingadvancedwinterhighwayingandspreadingequipment,andweathe

3、randroadwaymonitor-maintenancestrategies.TheVermontAgencyofTransportationcon-ducted“SmartSalting,”astudyofde-icingsalteffectivenessatdiffer-ing(e.g.,pavementsensors)aremakingtheseprioritieslesscon-entpavementtemperatures.Arecommendedsaltapplicationcurvefusing”(1).wasdeveloped.Asthepavementt

4、emperaturegoesdown,ittakesmorePavementtemperatureisthecontrollingiteminthetreatmentofsalttomelttheice.IowaDOTsnowremovalandmaterialcostswerehighwaysduringwinterstorms(2).Usingthisfact,pavementtem-usedtocalculatethetheoreticaldifferentialcostusingtheVermontperaturedataprovidedbyadvancedtechn

5、ologiesmaybeusedtoStudy’srecommendationsandcomparingtoactualpractice.AsavingcustomizetheratesofmaterialapplicationandthetypeofmaterialinmaterialsexistswhentheVermontStudymaterialapplicationratecurveisusedforpavementtemperaturesabove25°F.IowaDOTweatherutilizedtomatchroadconditions,andthuspro

6、videtreatmentforandpavementforecastverificationreportswerereviewed.Thereportsonlythosesectionsoftheroadwhichrequireit.Thispaperwillconsistedofscenario-basedquestioning,andfocusedoncostsavingsexaminetwomethodstousepavementtemperatureinadvancedandlosses.Thereportcalculationsdidrevealalossfort

7、he1996-1997winterhighwaymaintenancestrategies—thefirstmethodinvolveswinterseason,butpreliminaryfiguresforthe1997-1998wintersea-observationofpavementtemperaturefromstationarysensorsandsonareanticipatingsavings.Advancedwintermaintenancestrategiesmovingvehi