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NTCIP Center-to-Center Standards Group

Architecture Geographic Scope

Overview:

The National Transportation Communications for ITS Protocol (NTCIP) family of standards, created jointly by AASHTO, ITE and NEMA, address primarily the interfaces between a transportation management center, the ITS field devices it manages, and other centers. They provide both the rules for communicating (called protocols) and the vocabulary (called objects, data elements, and messages) necessary to exchange information between ITS systems. The NTCIP Center-to-Center (NTCIP C2C) Group of Standards addresses the communications protocols between two centers (e.g. two traffic management centers exchanging information to facilitate regional coordination of traffic signals). Some of the communication protocols covered by this family are CORBA, DATEX-ASN and FTP. These protocols are common across all Center-to-Center interfaces in the National ITS Architecture, and rather than repeat the entire list for each architecture flow, we have created this summary entry – the NTCIP C2C Group of communications standards. The standards that describe the “vocabulary” (data elements and messages) are mapped to specific architecture flows rather than the entire set of NTCIP C2C interfaces. In the regional traffic coordination example above, the “Traffic Management Data Dictionary” and the “Message Set for External TMC Communications” standards would be mapped to the specific flows between two Traffic Management Subsystems. In order to satisfy a wide spectrum of system and regional communications requirements, Center-to-Center ITS deployments should each implement the combinations of the following NTCIP C2C communications protocols that best meet their needs.

 

Includes:

Document ID Standard Title
NTCIP 2502 Information Profile for CORBA
NTCIP 2501 Information Profile for DATEX
NTCIP 2305 Application Profile for Common Object Request Broker Architecture (CORBA)
NTCIP 2304 Application Profile for Data Exchange ASN.1 (DATEX)
NTCIP 2303 Application Profile for File Transfer Protocol (FTP)
NTCIP 2202 Internet (TCP/IP and UDP/IP) Transport Profile
NTCIP 2104 Subnet Profile for Ethernet
NTCIP 1106 CORBA Near-Real Time Data Service
NTCIP 1105 CORBA Security Service
NTCIP 1104 CORBA Naming Convention
NTCIP 1102 Base Standard: Octet Encoding Rules (OER)

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