Table 2: Loose coupling by means of an SOA based model for ITS service delivery.

Kinds of ITS servicesIntegration and decoupling mechanismITS service providerITS consumer

Monitoring serviceSOA (SOAP)WSN-RSUAAS/VANET-RSUAAS/CCTV-RSUAAS/DSRC-RFID-RSUAAS/CALM-IR-RSUAAS (ML)Storage Systems/Application Servers (BL)
Management services for the RSUAASSOA (SOAP)XX-RSUAAS (ML)Application Servers (ML)
value-added ITS servicesSOA (SOAP)Application Servers-Legacy Systems (BL)Navigation Systems, Corporate Systems, VMS (UL)
Registry and discovery services for the monitoring services*SOA (UDDI)
Service catalogue
Registry and Discover Server (CTL)Monitoring Services (ML)
Registry and discovery services for the management services*SOA (UDDI)
Services Catalogue
Registry and Discover Server (CTL)Management Services (NM)
Registry and discovery services for the value-added ITS services*SOA (UDDI)
Services Catalogue
Registry and Discover Server (CTL)Value-Added ITS Services (BL)

Internal services; MLmonitoring level; BL business level; UL user level; CTL communication transverse level; XXcan be WSN, VANET, and so forth.