This solution is used within the U.S.. It combines standards associated with US: NTCIP Traffic Signal with those for I–F: SNMPv3/TLS. The US: NTCIP Traffic Signal standards include upper–layer standards required to implement center–to–field traffic signal 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.
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.
| Issue | Severity | Description | Associated Standard | Associated Triple |
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| Data not defined (high) | High | Required data elements are not defined. | (None) | KYTC Traffic Signal Roadway Equipment=>mixed use crossing status=>CVG Airport Connected Vehicle Roadside Equipment |
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| Data not defined (high) | High | Required data elements are not defined. | (None) | KYTC Traffic Signal Roadway Equipment=>mixed use crossing status=>ODOT / KYTC Connected Vehicle Roadside Equipment |
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| Data not defined (high) | High | Required data elements are not defined. | (None) | INDOT Traffic Signal Roadway Equipment=>mixed use crossing status=>INDOT Connected Vehicle RSE |
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| Data not defined (high) | High | Required data elements are not defined. | (None) | City and County Field Equipment=>mixed use crossing status=>City and County Connected Vehicle Roadside Equipment |
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| Data not defined (high) | High | Required data elements are not defined. | (None) | Hamilton County Field Equipment=>mixed use crossing status=>City and County Connected Vehicle Roadside Equipment |
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| Data not defined (high) | High | Required data elements are not defined. | (None) | ODOT Traffic Signal Roadway Equipment=>mixed use crossing status=>ODOT / KYTC Connected Vehicle Roadside Equipment |
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| Data not defined (high) | High | Required data elements are not defined. | (None) | Cincinnati Field Equipment=>mixed use crossing status=>City and County Connected Vehicle Roadside Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Cincinnati Field Equipment=>mixed use crossing status=>City and County Connected Vehicle Roadside Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City and County Field Equipment=>mixed use safety warning status=>City and County Traffic Control Center |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Hamilton County Field Equipment=>intersection control status=>City and County Connected Vehicle Roadside Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Hamilton County Field Equipment=>mixed use crossing status=>City and County Connected Vehicle Roadside Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Hamilton County Field Equipment=>mixed use safety warning status=>Hamilton County Signal Operations |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | ODOT Traffic Signal Roadway Equipment=>intersection control status=>ODOT / KYTC Connected Vehicle Roadside Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | ODOT Traffic Signal Roadway Equipment=>mixed use crossing status=>ODOT / KYTC Connected Vehicle Roadside Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Hamilton County Signal Operations=>mixed use safety warning control=>Hamilton County Field Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City and County Field Equipment=>mixed use safety warning status=>Other City and County Traffic Control Centers |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Cincinnati Field Equipment=>intersection control status=>City and County Connected Vehicle Roadside Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | INDOT Traffic Signal Roadway Equipment=>mixed use crossing status=>INDOT Connected Vehicle RSE |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Cincinnati Field Equipment=>mixed use safety warning status=>Cincinnati Traffic Control Center |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Cincinnati Traffic Control Center=>mixed use safety warning control=>Cincinnati Field Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City and County Field Equipment=>mixed use crossing status=>City and County Connected Vehicle Roadside Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City and County Field Equipment=>intersection control status=>City and County Connected Vehicle Roadside Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Other City and County Traffic Control Centers=>mixed use safety warning control=>City and County Field Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | INDOT Traffic Signal Roadway Equipment=>intersection control status=>INDOT Connected Vehicle RSE |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | INDOT Traffic Signal Roadway Equipment=>mixed use safety warning status=>INDOT Traffic Signal Control System |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | KYTC Traffic Signal Roadway Equipment=>mixed use crossing status=>ODOT / KYTC Connected Vehicle Roadside Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | KYTC Traffic Signal Roadway Equipment=>intersection control status=>ODOT / KYTC Connected Vehicle Roadside Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | KYTC Traffic Signal Roadway Equipment=>mixed use crossing status=>CVG Airport Connected Vehicle Roadside Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | KYTC Traffic Signal Roadway Equipment=>intersection control status=>CVG Airport Connected Vehicle Roadside Equipment |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City and County Traffic Control Center=>mixed use safety warning control=>City and County Field Equipment |
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| 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) |
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| Update data to SNMPv3 | Low | Data has been defined for SNMPv1, but needs to be updated to SNMPv3 format. | (None) | (All) |
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| 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) |
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| Source | Destination | Flow |
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| Cincinnati Field Equipment | Cincinnati Traffic Control Center | mixed use safety warning status |
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| Cincinnati Field Equipment | Cincinnati Traffic Control Center | signal control status |
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| Cincinnati Field Equipment | City and County Connected Vehicle Roadside Equipment | conflict monitor status |
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| Cincinnati Field Equipment | City and County Connected Vehicle Roadside Equipment | intersection control status |
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| Cincinnati Field Equipment | City and County Connected Vehicle Roadside Equipment | mixed use crossing status |
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| Cincinnati Field Equipment | ODOT ATMS | signal control status |
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| Cincinnati Traffic Control Center | Cincinnati Field Equipment | mixed use safety warning control |
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| Cincinnati Traffic Control Center | City and County Connected Vehicle Roadside Equipment | intersection management application info |
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| City and County Field Equipment | City and County Connected Vehicle Roadside Equipment | conflict monitor status |
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| City and County Field Equipment | City and County Connected Vehicle Roadside Equipment | intersection control status |
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| City and County Field Equipment | City and County Connected Vehicle Roadside Equipment | mixed use crossing status |
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| City and County Field Equipment | City and County Traffic Control Center | mixed use safety warning status |
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| City and County Field Equipment | City and County Traffic Control Center | signal control status |
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| City and County Field Equipment | Other City and County Traffic Control Centers | mixed use safety warning status |
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| City and County Field Equipment | Other City and County Traffic Control Centers | signal control status |
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| City and County Traffic Control Center | City and County Connected Vehicle Roadside Equipment | intersection management application info |
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| City and County Traffic Control Center | City and County Field Equipment | mixed use safety warning control |
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| City and County Traffic Control Center | CVG Airport Connected Vehicle Roadside Equipment | intersection management application info |
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| Hamilton County Field Equipment | City and County Connected Vehicle Roadside Equipment | conflict monitor status |
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| Hamilton County Field Equipment | City and County Connected Vehicle Roadside Equipment | intersection control status |
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| Hamilton County Field Equipment | City and County Connected Vehicle Roadside Equipment | mixed use crossing status |
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| Hamilton County Field Equipment | Hamilton County Signal Operations | mixed use safety warning status |
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| Hamilton County Field Equipment | Hamilton County Signal Operations | signal control status |
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| Hamilton County Signal Operations | City and County Connected Vehicle Roadside Equipment | intersection management application info |
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| Hamilton County Signal Operations | Hamilton County Field Equipment | mixed use safety warning control |
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| INDOT Field Equipment | INDOT Traffic Operations Center | signal control status |
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| INDOT Traffic Operations Center | INDOT Connected Vehicle RSE | intersection management application info |
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| INDOT Traffic Signal Control System | INDOT Connected Vehicle RSE | intersection management application info |
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| INDOT Traffic Signal Roadway Equipment | INDOT Connected Vehicle RSE | conflict monitor status |
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| INDOT Traffic Signal Roadway Equipment | INDOT Connected Vehicle RSE | intersection control status |
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| INDOT Traffic Signal Roadway Equipment | INDOT Connected Vehicle RSE | mixed use crossing status |
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| INDOT Traffic Signal Roadway Equipment | INDOT Traffic Operations Center | signal control status |
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| INDOT Traffic Signal Roadway Equipment | INDOT Traffic Signal Control System | mixed use safety warning status |
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| INDOT Traffic Signal Roadway Equipment | INDOT Traffic Signal Control System | signal control status |
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| KYTC District 6 Field Equipment | KYTC District 6 Traffic Operations Center | signal control status |
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| KYTC District 6 Field Equipment | TRIMARC (KYTC) | signal control status |
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| KYTC District 6 Traffic Operations Center | ODOT / KYTC Connected Vehicle Roadside Equipment | intersection management application info |
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| KYTC Traffic Signal Control System | ODOT / KYTC Connected Vehicle Roadside Equipment | intersection management application info |
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| KYTC Traffic Signal Roadway Equipment | CVG Airport Connected Vehicle Roadside Equipment | conflict monitor status |
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| KYTC Traffic Signal Roadway Equipment | CVG Airport Connected Vehicle Roadside Equipment | intersection control status |
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| KYTC Traffic Signal Roadway Equipment | CVG Airport Connected Vehicle Roadside Equipment | mixed use crossing status |
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| KYTC Traffic Signal Roadway Equipment | KYTC District 6 Traffic Operations Center | signal control status |
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| KYTC Traffic Signal Roadway Equipment | KYTC Traffic Signal Control System | signal control status |
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| KYTC Traffic Signal Roadway Equipment | ODOT / KYTC Connected Vehicle Roadside Equipment | conflict monitor status |
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| KYTC Traffic Signal Roadway Equipment | ODOT / KYTC Connected Vehicle Roadside Equipment | intersection control status |
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| KYTC Traffic Signal Roadway Equipment | ODOT / KYTC Connected Vehicle Roadside Equipment | mixed use crossing status |
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| KYTC Traffic Signal Roadway Equipment | TRIMARC (KYTC) | signal control status |
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| ODOT / KYTC Connected Vehicle Roadside Equipment | KYTC District 6 Traffic Operations Center | signal control status |
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| ODOT / KYTC Traffic Sensors | KYTC District 6 Traffic Operations Center | signal control status |
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| ODOT / KYTC Traffic Sensors | TRIMARC (KYTC) | signal control status |
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| ODOT ATMS | INDOT Connected Vehicle RSE | intersection management application info |
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| ODOT ATMS | ODOT / KYTC Connected Vehicle Roadside Equipment | intersection management application info |
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| ODOT District 8 Field Equipment | ODOT ATMS | signal control status |
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| ODOT District 8 Field Equipment | ODOT District 8 Signal Operations | signal control status |
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| ODOT District 8 Field Equipment | Other ODOT Traffic Operations Center | signal control status |
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| ODOT Traffic Signal Control System | ODOT / KYTC Connected Vehicle Roadside Equipment | intersection management application info |
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| ODOT Traffic Signal Roadway Equipment | ODOT / KYTC Connected Vehicle Roadside Equipment | conflict monitor status |
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| ODOT Traffic Signal Roadway Equipment | ODOT / KYTC Connected Vehicle Roadside Equipment | intersection control status |
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| ODOT Traffic Signal Roadway Equipment | ODOT / KYTC Connected Vehicle Roadside Equipment | mixed use crossing status |
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| ODOT Traffic Signal Roadway Equipment | ODOT ATMS | signal control status |
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| ODOT Traffic Signal Roadway Equipment | ODOT District 8 Signal Operations | signal control status |
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| ODOT Traffic Signal Roadway Equipment | ODOT Traffic Signal Control System | signal control status |
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| Other City and County Traffic Control Centers | City and County Connected Vehicle Roadside Equipment | intersection management application info |
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| Other City and County Traffic Control Centers | City and County Field Equipment | mixed use safety warning control |
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| TRIMARC (KYTC) | ODOT / KYTC Connected Vehicle Roadside Equipment | intersection management application info |
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