OKI Regional ITS Architecture

US: NTCIP Environmental Sensors - SNMPv3/TLS

Description

This solution is used within the U.S.. It combines standards associated with US: NTCIP Environmental Sensors with those for I–F: SNMPv3/TLS. The US: NTCIP Environmental Sensors standards include upper–layer standards required to implement center–to–field weather and environmental sensor 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 1204	NTCIP Environmental Sensor Station Interface Standard	This standard defines SNMP objects (data elements) for monitoring and controlling environmental sensor stations (especially road weather stations).
Facilities	NTCIP 1204	NTCIP Environmental Sensor Station Interface Standard	This standard defines SNMP objects (data elements) for monitoring and controlling environmental sensor stations (especially road weather stations).

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Out of date (medium)	Medium	The standard includes normative references to other standards that have been subject to significant changes that can impact interoperability or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)
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	KYTC RWIS Stations=>environmental sensor data=>KYTC District 6 Traffic Operations Center
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	Cincinnati Field Equipment=>environmental sensor data=>Cincinnati Traffic Control Center
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	KYTC District 6 Field Equipment=>environmental sensor data=>KYTC District 6 Traffic Operations Center
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	KYTC District 6 Field Equipment=>environmental sensor data=>TRIMARC (KYTC)
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	ODOT RWIS Stations=>environmental sensor data=>ODOT District 8 Maintenance Garages
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	ODOT RWIS Stations=>environmental sensor data=>ODOT / KYTC Connected Vehicle Roadside Equipment
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	ODOT RWIS Stations=>environmental sensor data=>ODOT ATMS
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	ODOT / KYTC Traffic Sensors=>environmental sensor data=>ODOT ATMS
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	ODOT District 8 Field Equipment=>environmental sensor data=>ODOT ATMS
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	KYTC RWIS Stations=>environmental sensor data=>ODOT / KYTC Connected Vehicle Roadside Equipment
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	KYTC RWIS Stations=>environmental sensor data=>TRIMARC (KYTC)
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	INDOT RWIS Stations=>environmental sensor data=>INDOT Traffic Operations Center
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	INDOT RWIS Stations=>environmental sensor data=>INDOT Connected Vehicle RSE
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	INDOT RWIS Stations=>environmental sensor data=>INDOT Seymour District Maintenance Garages
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	INDOT Field Equipment=>environmental sensor data=>INDOT Traffic Operations Center
Accuracy of data	Low	The standard is missing accuracy requirements for some of its data, which may result in anomalous behavior.	(None)	ODOT / KYTC Traffic Sensors=>environmental sensor data=>TRIMARC (KYTC)
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	environmental sensor data
Cincinnati Traffic Control Center	Cincinnati Field Equipment	environmental sensors control
INDOT Field Equipment	INDOT Traffic Operations Center	environmental sensor data
INDOT RWIS Stations	INDOT Connected Vehicle RSE	environmental sensor data
INDOT RWIS Stations	INDOT Seymour District Maintenance Garages	environmental sensor data
INDOT RWIS Stations	INDOT Traffic Operations Center	environmental sensor data
INDOT Seymour District Maintenance Garages	INDOT RWIS Stations	environmental sensors control
INDOT Traffic Operations Center	INDOT Field Equipment	environmental sensors control
INDOT Traffic Operations Center	INDOT RWIS Stations	environmental sensors control
KYTC District 6 Field Equipment	KYTC District 6 Traffic Operations Center	environmental sensor data
KYTC District 6 Field Equipment	TRIMARC (KYTC)	environmental sensor data
KYTC District 6 Maintenance Garages	KYTC RWIS Stations	environmental sensors control
KYTC District 6 Maintenance Operations	KYTC RWIS Stations	environmental sensors control
KYTC District 6 Traffic Operations Center	KYTC District 6 Field Equipment	environmental sensors control
KYTC District 6 Traffic Operations Center	KYTC RWIS Stations	environmental sensors control
KYTC District 6 Traffic Operations Center	ODOT / KYTC Connected Vehicle Roadside Equipment	environmental sensors control
KYTC RWIS Stations	KYTC District 6 Traffic Operations Center	environmental sensor data
KYTC RWIS Stations	ODOT / KYTC Connected Vehicle Roadside Equipment	environmental sensor data
KYTC RWIS Stations	TRIMARC (KYTC)	environmental sensor data
ODOT / KYTC Traffic Sensors	ODOT ATMS	environmental sensor data
ODOT / KYTC Traffic Sensors	TRIMARC (KYTC)	environmental sensor data
ODOT ATMS	INDOT Field Equipment	environmental sensors control
ODOT ATMS	KYTC District 6 Field Equipment	environmental sensors control
ODOT ATMS	ODOT / KYTC Traffic Sensors	environmental sensors control
ODOT ATMS	ODOT RWIS Stations	environmental sensors control
ODOT District 8 Field Equipment	ODOT ATMS	environmental sensor data
ODOT District 8 Maintenance Garages	ODOT RWIS Stations	environmental sensors control
ODOT RWIS Stations	ODOT / KYTC Connected Vehicle Roadside Equipment	environmental sensor data
ODOT RWIS Stations	ODOT ATMS	environmental sensor data
ODOT RWIS Stations	ODOT District 8 Maintenance Garages	environmental sensor data
ODOT Statewide TMC	ODOT / KYTC Traffic Sensors	environmental sensors control
Other City and County Traffic Control Centers	City and County Field Equipment	environmental sensors control
TRIMARC (KYTC)	INDOT Field Equipment	environmental sensors control
TRIMARC (KYTC)	KYTC District 6 Field Equipment	environmental sensors control
TRIMARC (KYTC)	KYTC RWIS Stations	environmental sensors control
TRIMARC (KYTC)	ODOT District 8 Field Equipment	environmental sensors control