OKI Regional ITS Architecture

US: NTCIP Signal System Masters - SNMPv3/TLS

Description

This solution is used within the U.S.. It combines standards associated with US: NTCIP Signal System Masters with those for I–F: SNMPv3/TLS. The US: NTCIP Signal System Masters standards include upper–layer standards required to implement center–to–field signal–system master communications. The I–F: SNMPv3/TLS standards include lower–layer standards that support secure center–to–field and field–to–field communications using simple network management protocol (SNMPv3); implementations are strongly encouraged to use the TLS for SNMP security option for this solution to ensure adequate security.

Includes Standards

Level	DocNum	FullName	Description
Mgmt	NTCIP 1201	NTCIP Global Object (GO) Definitions	This standard defines SNMP objects (data elements) used by a wide range of field devices like time and versioning information.
Security	IETF RFC 6353	Transport Layer Security (TLS) Transport Model for the Simple Network Management Protocol (SNMP)	This standard (RFC) defines how to use the TLS authentication service to provide authentication within the access control mechanism of SNMP.
ITS Application Entity	NTCIP 1202	NTCIP Object Definitions for ASC	This standard defines SNMP objects (data elements) for a center to control a traffic signal and its interface with connected vehicles.
ITS Application Entity	NTCIP 1210	NTCIP Objects for Signal System Masters	This standard defines SNMP objects (data elements) for monitoring and controlling signal system master controllers.
Facilities	NTCIP 1202	NTCIP Object Definitions for ASC	This standard defines SNMP objects (data elements) for a center to control a traffic signal and its interface with connected vehicles.
Facilities	NTCIP 1210	NTCIP Objects for Signal System Masters	This standard defines SNMP objects (data elements) for monitoring and controlling signal system master controllers.

Readiness: High–Moderate

Readiness Description

One significant or possibly a couple minor issues. For existing deployments, the chosen solution likely has identified security or management issues not addressed by the communications solution. Deployers should consider additional security measures, such as communications link and physical security as part of these solutions. They should also review the management issues to see if they are relevant to their deployment and would require mitigation. For new deployments, the deployment efforts should consider a path to addressing these issues as a part of their design activities. The solution does not by itself provide a fully secure implementation without additional work.

Issues

Issue	Severity	Description	Associated Standard	Associated Triple
Out of date (medium)	Medium	The standard includes normative references to other standards that have been subject to significant changes that can impact interoperability or security of systems and the industry has not specified if and how these updates should be implemented for deployments of this standard.	IETF RFC 6353 TLS for SNMP	(All)
Update data to SNMPv3	Low	Data has been defined for SNMPv1, but needs to be updated to SNMPv3 format.	(None)	(All)
Use TLS for SNMP Option	Low	The standard allows for multiple security mechanisms. The only defined mechanism that meets the requirements for C–ITS is the one based on TLS.	(None)	(All)

Supports Interfaces

Source	Destination	Flow
Cincinnati Field Equipment	Cincinnati Traffic Control Center	signal fault data
Cincinnati Field Equipment	ODOT ATMS	signal fault data
Cincinnati Traffic Control Center	Cincinnati Field Equipment	signal control commands
Cincinnati Traffic Control Center	Cincinnati Field Equipment	signal control device configuration
Cincinnati Traffic Control Center	Cincinnati Field Equipment	signal control plans
Cincinnati Traffic Control Center	Cincinnati Field Equipment	signal system configuration
City and County Field Equipment	City and County Traffic Control Center	signal fault data
City and County Field Equipment	Other City and County Traffic Control Centers	signal fault data
City and County Traffic Control Center	City and County Field Equipment	signal control commands
City and County Traffic Control Center	City and County Field Equipment	signal control device configuration
City and County Traffic Control Center	City and County Field Equipment	signal control plans
City and County Traffic Control Center	City and County Field Equipment	signal system configuration
Hamilton County Field Equipment	Hamilton County Signal Operations	signal fault data
Hamilton County Signal Operations	Hamilton County Field Equipment	signal control commands
Hamilton County Signal Operations	Hamilton County Field Equipment	signal control device configuration
Hamilton County Signal Operations	Hamilton County Field Equipment	signal control plans
Hamilton County Signal Operations	Hamilton County Field Equipment	signal system configuration
INDOT Cameras	INDOT Traffic Operations Center	signal fault data
INDOT Field Equipment	INDOT Traffic Operations Center	signal fault data
INDOT Traffic Operations Center	INDOT Field Equipment	signal control commands
INDOT Traffic Operations Center	INDOT Field Equipment	signal control device configuration
INDOT Traffic Operations Center	INDOT Field Equipment	signal control plans
INDOT Traffic Operations Center	INDOT Field Equipment	signal system configuration
INDOT Traffic Operations Center	INDOT Ramp Meters	signal control commands
INDOT Traffic Operations Center	INDOT Traffic Signal Roadway Equipment	signal control commands
INDOT Traffic Operations Center	INDOT Traffic Signal Roadway Equipment	signal control device configuration
INDOT Traffic Operations Center	INDOT Traffic Signal Roadway Equipment	signal control plans
INDOT Traffic Operations Center	INDOT Traffic Signal Roadway Equipment	signal system configuration
INDOT Traffic Signal Control System	INDOT Traffic Signal Roadway Equipment	signal control commands
INDOT Traffic Signal Control System	INDOT Traffic Signal Roadway Equipment	signal control device configuration
INDOT Traffic Signal Control System	INDOT Traffic Signal Roadway Equipment	signal control plans
INDOT Traffic Signal Control System	INDOT Traffic Signal Roadway Equipment	signal system configuration
INDOT Traffic Signal Roadway Equipment	INDOT Traffic Operations Center	signal fault data
INDOT Traffic Signal Roadway Equipment	INDOT Traffic Signal Control System	signal fault data
KYTC District 6 Field Equipment	KYTC District 6 Traffic Operations Center	signal fault data
KYTC District 6 Field Equipment	TRIMARC (KYTC)	signal fault data
KYTC District 6 Traffic Operations Center	KYTC District 6 Field Equipment	signal control commands
KYTC District 6 Traffic Operations Center	KYTC District 6 Field Equipment	signal control device configuration
KYTC District 6 Traffic Operations Center	KYTC District 6 Field Equipment	signal control plans
KYTC District 6 Traffic Operations Center	KYTC District 6 Field Equipment	signal system configuration
KYTC District 6 Traffic Operations Center	KYTC Traffic Signal Roadway Equipment	signal control commands
KYTC District 6 Traffic Operations Center	KYTC Traffic Signal Roadway Equipment	signal control device configuration
KYTC District 6 Traffic Operations Center	KYTC Traffic Signal Roadway Equipment	signal control plans
KYTC District 6 Traffic Operations Center	KYTC Traffic Signal Roadway Equipment	signal system configuration
KYTC Traffic Signal Control System	KYTC Traffic Signal Roadway Equipment	signal control commands
KYTC Traffic Signal Control System	KYTC Traffic Signal Roadway Equipment	signal control device configuration
KYTC Traffic Signal Control System	KYTC Traffic Signal Roadway Equipment	signal control plans
KYTC Traffic Signal Control System	KYTC Traffic Signal Roadway Equipment	signal system configuration
KYTC Traffic Signal Roadway Equipment	KYTC District 6 Traffic Operations Center	signal fault data
KYTC Traffic Signal Roadway Equipment	KYTC Traffic Signal Control System	signal fault data
KYTC Traffic Signal Roadway Equipment	TRIMARC (KYTC)	signal fault data
ODOT / KYTC Traffic Sensors	KYTC District 6 Traffic Operations Center	signal fault data
ODOT / KYTC Traffic Sensors	TRIMARC (KYTC)	signal fault data
ODOT ATMS	Cincinnati Field Equipment	signal control commands
ODOT ATMS	Cincinnati Field Equipment	signal control device configuration
ODOT ATMS	Cincinnati Field Equipment	signal control plans
ODOT ATMS	Cincinnati Field Equipment	signal system configuration
ODOT ATMS	City and County Field Equipment	signal control commands
ODOT ATMS	City and County Field Equipment	signal control device configuration
ODOT ATMS	City and County Field Equipment	signal control plans
ODOT ATMS	City and County Field Equipment	signal system configuration
ODOT ATMS	ODOT District 8 Field Equipment	signal control commands
ODOT ATMS	ODOT District 8 Field Equipment	signal control device configuration
ODOT ATMS	ODOT District 8 Field Equipment	signal control plans
ODOT ATMS	ODOT District 8 Field Equipment	signal system configuration
ODOT ATMS	ODOT Traffic Signal Roadway Equipment	signal control commands
ODOT ATMS	ODOT Traffic Signal Roadway Equipment	signal control device configuration
ODOT ATMS	ODOT Traffic Signal Roadway Equipment	signal control plans
ODOT ATMS	ODOT Traffic Signal Roadway Equipment	signal system configuration
ODOT District 8 Field Equipment	ODOT ATMS	signal fault data
ODOT District 8 Field Equipment	ODOT District 8 Signal Operations	signal fault data
ODOT District 8 Signal Operations	ODOT District 8 Field Equipment	signal control commands
ODOT District 8 Signal Operations	ODOT District 8 Field Equipment	signal control device configuration
ODOT District 8 Signal Operations	ODOT District 8 Field Equipment	signal control plans
ODOT District 8 Signal Operations	ODOT District 8 Field Equipment	signal system configuration
ODOT District 8 Signal Operations	ODOT Traffic Signal Roadway Equipment	signal control commands
ODOT District 8 Signal Operations	ODOT Traffic Signal Roadway Equipment	signal control device configuration
ODOT District 8 Signal Operations	ODOT Traffic Signal Roadway Equipment	signal control plans
ODOT District 8 Signal Operations	ODOT Traffic Signal Roadway Equipment	signal system configuration
ODOT Traffic Signal Control System	ODOT Traffic Signal Roadway Equipment	signal control commands
ODOT Traffic Signal Control System	ODOT Traffic Signal Roadway Equipment	signal control device configuration
ODOT Traffic Signal Control System	ODOT Traffic Signal Roadway Equipment	signal control plans
ODOT Traffic Signal Control System	ODOT Traffic Signal Roadway Equipment	signal system configuration
ODOT Traffic Signal Roadway Equipment	ODOT ATMS	signal fault data
ODOT Traffic Signal Roadway Equipment	ODOT District 8 Signal Operations	signal fault data
ODOT Traffic Signal Roadway Equipment	ODOT Traffic Signal Control System	signal fault data
Other City and County Traffic Control Centers	City and County Field Equipment	signal control commands
Other City and County Traffic Control Centers	City and County Field Equipment	signal control device configuration
Other City and County Traffic Control Centers	City and County Field Equipment	signal control plans
Other City and County Traffic Control Centers	City and County Field Equipment	signal system configuration
Other ODOT Traffic Operations Center	ODOT District 8 Field Equipment	signal control commands
TRIMARC (KYTC)	City and County Field Equipment	signal control commands
TRIMARC (KYTC)	City and County Field Equipment	signal control device configuration
TRIMARC (KYTC)	City and County Field Equipment	signal control plans
TRIMARC (KYTC)	City and County Field Equipment	signal system configuration