Buildingfuture-proofnetworksforintelligenttransportationsystemsApplicationNoteBuildingfuture-proofnetworksforintelligenttransportationsystemsALCATEL-LUCENTENTERPRISEAPPLICATIONNOTE2IntroductionRoadtransportationhasbeenbehindthedigitaltechnologycurve,butitisquicklycatchingup.Concernsforsafety,congestionandmoreefficienttrafficmanagementledtothedevelopmentofIntelligentTransportationSystems(ITS)inthe1990s.Sincethen,therequirementsandcapabilitiesofITShaveexpandedrapidly.Fromearlyimplementationsofvariablespeedlimit(VSL)signs,dynamicmessagesigns(DMS)ande-Tolls,totomorrow’smeshofsensors,connectedvehiclesand,eventually,self-drivingcars,thelistofITSapplicationsisgrowingdailyasvehicular-basedtransportationsystemsbecomethenextpromisingfieldintheadvanceofdigitaltechnologies.WiredandwirelessnetworkshandlethecommunicationsforallITSsystemsandsub-systems.Theylinkcameras,sensors,signage,signalingandvehiclestoremotetrafficoperationscenterswherethevastamountsofdatathatwillbeproducedbythesesystemsaremonitoredandactedupontoreducevehiclecongestion,monitorandrespondtoincidentsandotherwiseensurethesmoothrunningofourhighways.Althoughtraditionallyserial-based,ITScommunicationsnetworksaremoving(alongwiththerestoftheworld)toIPand,inwirednetworksspecifically,toIP/Ethernet.IP/Ethernetsupportsawiderrangeofapplications,scalestosupportheavybandwidthapplications,suchasvideo,andworkswiththecommunicationsalreadyinusebydrivers,passengersandvehicularsystems.Thus,anITSnetworkbasedonIP/Ethernetisbydefinitionopentonewapplicationsandservicesinthefuture,asITSapplicationsincreasinglyinteractwithvehiclesandconsumers.Alcatel-LucentEnterprisehasarangeofIP/Ethernetproductsforbuildingoutahardened,scalableandsecureIP/EthernetinfrastructurewiththecapacityandfeaturestohandlethemostdemandingITSapplications.Critically,ournetworksystemsaredesignedtosimplifyoperationalcomplexity,reduceconfigurationtime,andensurealonglifespanforproductsdeployedinthefield–anenvironmentwherethelaborcostsinvolvedinreplacingnetworkinggear...
