This solution is used within the U.S.. It combines standards associated with US: TCIP with those for I–I: Secure Internet (ITS). The US: TCIP standards include upper–layer standards required to implement transit–related communications. The I–I: Secure Internet (ITS) standards include lower–layer standards that support secure communications between ITS equipment using X.509 or IEEE 1609.2 security certificates.
Multiple significant and minor issues. For existing deployments, the chosen solution is likely deficient in security or management capabilities, and the issues should be reviewed and upgrades developed as needed. Some solutions in this category may also be becoming obsolete from an interoperability perspective and if this is the case, then upgrades should be planned as soon as possible. For new deployments, the solution may be viable for pilots when applied to the triples it supports; such pilot deployments should consider a path to addressing these issues as a part of their design activities. The solution does not provide sufficient interoperability, management, and security to enable proper, full–scale deployment without additional work.
| Issue | Severity | Description | Associated Standard | Associated Triple |
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| Encoding rules not defined | High | The standards do not unambiguously define which set of encoding rules to use. | (None) | (All) |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | CTC Transit Dispatch=>service information request=>Regional Airports |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | TANK Transit System Dispatch=>service information request=>Regional Airports |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | The Banks Intermodal Center=>service information response=>TANK Transit System Dispatch |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | The Banks Intermodal Center=>service information response=>SORTA Transit Dispatch 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) | The Banks Intermodal Center=>service information response=>Local Transit Systems |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | The Banks Intermodal Center=>service information response=>CTC Transit Dispatch |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | The Banks Intermodal Center=>service information response=>BCRTA Transit System Dispatch |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | SORTA Transit Dispatch Center=>service information request=>The Banks Intermodal 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) | SORTA Transit Dispatch Center=>service information request=>Regional Airports |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Local Transit Systems=>service information request=>The Banks Intermodal 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) | TANK Transit System Dispatch=>service information request=>The Banks Intermodal 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) | CTC Transit Dispatch=>service information request=>The Banks Intermodal 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) | Regional Airports=>service information response=>TANK Transit System Dispatch |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Regional Airports=>service information response=>SORTA Transit Dispatch 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) | Regional Airports=>service information response=>Local Transit Systems |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Regional Airports=>service information response=>CTC Transit Dispatch |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Regional Airports=>service information response=>BCRTA Transit System Dispatch |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | BCRTA Transit System Dispatch=>service information request=>The Banks Intermodal 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) | BCRTA Transit System Dispatch=>service information request=>Regional Airports |
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| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Local Transit Systems=>service information request=>Regional Airports |
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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. | TCIP – Data | (All) |
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| Secure data access not provided | Medium | The solution does not define rules on how the application entity authenticates requests to accept or provide data. | (None) | (All) |
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| Data not defined in standard format | Low | The definition of data concepts should conform to ISO 14817–1 to promote reuse among ITS. | TCIP – Data | (All) |
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| Source | Destination | Flow |
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| BCRTA Transit Information Systems | BCRTA Transit System Dispatch | alarm notification |
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| BCRTA Transit Information Systems | Regional 911 Call Centers | alarm notification |
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| BCRTA Transit Information Systems | Regional Operations Center | alarm notification |
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| BCRTA Transit Information Systems | Regional Public Safety Dispatch Centers | alarm notification |
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| BCRTA Transit System Dispatch | BCRTA Transit Information Systems | alarm acknowledge |
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| BCRTA Transit System Dispatch | BCRTA Transit Information Systems | fare management information |
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| BCRTA Transit System Dispatch | BCRTA Traveler Information System | demand responsive transit plan |
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| BCRTA Transit System Dispatch | City and County Traffic Control Center | traffic control priority request |
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| BCRTA Transit System Dispatch | CTC Transit Dispatch | transit traveler information coordination |
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| BCRTA Transit System Dispatch | Hamilton County Signal Operations | traffic control priority request |
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| BCRTA Transit System Dispatch | Local Transit Systems | transit traveler information coordination |
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| BCRTA Transit System Dispatch | ODOT / KYTC Traveler Information System | demand responsive transit plan |
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| BCRTA Transit System Dispatch | ODOT District 8 Signal Operations | traffic control priority request |
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| BCRTA Transit System Dispatch | Ohio Mobility Apps | demand responsive transit plan |
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| BCRTA Transit System Dispatch | Other City and County Traffic Control Centers | traffic control priority request |
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| BCRTA Transit System Dispatch | Regional Airports | service information request |
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| BCRTA Transit System Dispatch | SORTA Transit Dispatch Center | transit traveler information coordination |
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| BCRTA Transit System Dispatch | The Banks Intermodal Center | service information request |
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| BCRTA Traveler Information System | BCRTA Transit System Dispatch | demand responsive transit request |
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| Cincinnati Streetcar Transit Information Systems | Regional 911 Call Centers | alarm notification |
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| Cincinnati Streetcar Transit Information Systems | Regional Operations Center | alarm notification |
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| Cincinnati Streetcar Transit Information Systems | Regional Public Safety Dispatch Centers | alarm notification |
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| Cincinnati Streetcar Transit Information Systems | SORTA Riverfront Transit Center | alarm notification |
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| Cincinnati Traffic Control Center | CTC Transit Dispatch | traffic control priority status |
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| Cincinnati Traffic Control Center | SORTA Transit Dispatch Center | traffic control priority status |
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| City and County Traffic Control Center | BCRTA Transit System Dispatch | traffic control priority status |
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| City and County Traffic Control Center | CTC Transit Dispatch | traffic control priority status |
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| City and County Traffic Control Center | Local Transit Systems | traffic control priority status |
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| City and County Traffic Control Center | SORTA Transit Dispatch Center | traffic control priority status |
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| City and County Traffic Control Center | TANK Transit System Dispatch | traffic control priority status |
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| CTC Transit Dispatch | BCRTA Transit System Dispatch | transit traveler information coordination |
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| CTC Transit Dispatch | Cincinnati Traffic Control Center | traffic control priority request |
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| CTC Transit Dispatch | City and County Traffic Control Center | traffic control priority request |
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| CTC Transit Dispatch | Hamilton County Signal Operations | traffic control priority request |
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| CTC Transit Dispatch | Local Transit Systems | transit traveler information coordination |
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| CTC Transit Dispatch | ODOT / KYTC Traveler Information System | demand responsive transit plan |
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| CTC Transit Dispatch | Ohio Mobility Apps | demand responsive transit plan |
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| CTC Transit Dispatch | Other City and County Traffic Control Centers | traffic control priority request |
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| CTC Transit Dispatch | Regional Airports | service information request |
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| CTC Transit Dispatch | SORTA Transit Dispatch Center | transit traveler information coordination |
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| CTC Transit Dispatch | The Banks Intermodal Center | service information request |
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| GoKY | KYTC Office of Public Affairs | transit service information |
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| Hamilton County Signal Operations | Local Transit Systems | traffic control priority status |
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| KYTC Office of Public Affairs | GoKY | transit service information |
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| KYTC Office of Public Affairs | ODOT / KYTC Traveler Information System | transit service information |
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| Local Transit Agency Transit Information Systems | Local Transit Systems | alarm notification |
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| Local Transit Agency Transit Information Systems | Local Transit Systems | fare collection data |
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| Local Transit Agency Transit Information Systems | Regional 911 Call Centers | alarm notification |
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| Local Transit Agency Transit Information Systems | Regional Operations Center | alarm notification |
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| Local Transit Agency Transit Information Systems | Regional Public Safety Dispatch Centers | alarm notification |
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| Local Transit Systems | BCRTA Transit System Dispatch | transit traveler information coordination |
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| Local Transit Systems | Cincinnati Traffic Control Center | traffic control priority request |
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| Local Transit Systems | City and County Traffic Control Center | traffic control priority request |
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| Local Transit Systems | CTC Transit Dispatch | transit traveler information coordination |
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| Local Transit Systems | Hamilton County Signal Operations | traffic control priority request |
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| Local Transit Systems | KYTC Traffic Signal Control System | traffic control priority request |
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| Local Transit Systems | Local Transit Agency Transit Information Systems | alarm acknowledge |
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| Local Transit Systems | Local Transit Agency Transit Information Systems | fare management information |
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| Local Transit Systems | Ohio Mobility Apps | demand responsive transit plan |
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| Local Transit Systems | Other City and County Traffic Control Centers | traffic control priority request |
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| Local Transit Systems | Regional Airports | service information request |
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| Local Transit Systems | SORTA Transit Dispatch Center | transit traveler information coordination |
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| Local Transit Systems | TANK Transit System Dispatch | transit traveler information coordination |
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| Local Transit Systems | The Banks Intermodal Center | service information request |
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| ODOT / KYTC Traveler Information System | BCRTA Transit System Dispatch | demand responsive transit request |
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| ODOT / KYTC Traveler Information System | CTC Transit Dispatch | demand responsive transit request |
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| ODOT / KYTC Traveler Information System | KYTC Office of Public Affairs | transit service information |
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| ODOT / KYTC Traveler Information System | ODOT Public Information Office | transit service information |
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| ODOT 511 Telephone Information Service | ODOT Public Information Office | transit service information |
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| ODOT OHGO Traveler Information System | ODOT Public Information Office | transit service information |
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| ODOT Public Information Office | ODOT / KYTC Traveler Information System | transit service information |
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| ODOT Public Information Office | ODOT OHGO Traveler Information System | transit service information |
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| Ohio Mobility Apps | BCRTA Transit System Dispatch | demand responsive transit request |
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| Ohio Mobility Apps | CTC Transit Dispatch | demand responsive transit request |
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| Ohio Mobility Apps | Local Transit Systems | demand responsive transit request |
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| Ohio Mobility Apps | SORTA Transit Dispatch Center | demand responsive transit request |
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| Other City and County Traffic Control Centers | BCRTA Transit System Dispatch | traffic control priority status |
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| Other City and County Traffic Control Centers | CTC Transit Dispatch | traffic control priority status |
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| Other City and County Traffic Control Centers | Local Transit Systems | traffic control priority status |
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| Other City and County Traffic Control Centers | SORTA Transit Dispatch Center | traffic control priority status |
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| Other City and County Traffic Control Centers | TANK Transit System Dispatch | traffic control priority status |
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| Regional 911 Call Centers | BCRTA Transit Information Systems | alarm acknowledge |
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| Regional 911 Call Centers | Cincinnati Streetcar Transit Information Systems | alarm acknowledge |
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| Regional 911 Call Centers | Local Transit Agency Transit Information Systems | alarm acknowledge |
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| Regional 911 Call Centers | SORTA Transit Information Systems | alarm acknowledge |
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| Regional 911 Call Centers | TANK Regional Transit Hubs | alarm acknowledge |
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| Regional 911 Call Centers | TANK Transit Information Systems | alarm acknowledge |
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| Regional Airports | BCRTA Transit System Dispatch | service information response |
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| Regional Airports | CTC Transit Dispatch | service information response |
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| Regional Airports | Local Transit Systems | service information response |
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| Regional Airports | SORTA Transit Dispatch Center | service information response |
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| Regional Airports | TANK Transit System Dispatch | service information response |
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| Regional Operations Center | BCRTA Transit Information Systems | alarm acknowledge |
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| Regional Operations Center | Cincinnati Streetcar Transit Information Systems | alarm acknowledge |
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| Regional Operations Center | Local Transit Agency Transit Information Systems | alarm acknowledge |
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| Regional Operations Center | SORTA Regional Transit Hubs | alarm acknowledge |
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| Regional Operations Center | SORTA Transit Information Systems | alarm acknowledge |
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| Regional Public Safety Dispatch Centers | BCRTA Transit Information Systems | alarm acknowledge |
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| Regional Public Safety Dispatch Centers | Cincinnati Streetcar Transit Information Systems | alarm acknowledge |
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| Regional Public Safety Dispatch Centers | Local Transit Agency Transit Information Systems | alarm acknowledge |
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| Regional Public Safety Dispatch Centers | SORTA Regional Transit Hubs | alarm acknowledge |
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| Regional Public Safety Dispatch Centers | SORTA Transit Information Systems | alarm acknowledge |
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| Regional Public Safety Dispatch Centers | TANK Regional Transit Hubs | alarm acknowledge |
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| Regional Public Safety Dispatch Centers | TANK Transit Information Systems | alarm acknowledge |
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| SORTA Regional Transit Hubs | BCRTA Transit System Dispatch | fare collection data |
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| SORTA Regional Transit Hubs | Regional 911 Call Centers | alarm notification |
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| SORTA Regional Transit Hubs | Regional Operations Center | alarm notification |
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| SORTA Regional Transit Hubs | Regional Public Safety Dispatch Centers | alarm notification |
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| SORTA Regional Transit Hubs | SORTA Transit Dispatch Center | alarm notification |
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| SORTA Regional Transit Hubs | SORTA Transit Dispatch Center | fare collection data |
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| SORTA Regional Transit Hubs | TANK Transit System Dispatch | fare collection data |
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| SORTA Riverfront Transit Center | Cincinnati Streetcar Transit Information Systems | alarm acknowledge |
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| SORTA Riverfront Transit Center | SORTA Transit Information Systems | alarm acknowledge |
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| SORTA Transit Dispatch Center | BCRTA Transit System Dispatch | transit traveler information coordination |
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| SORTA Transit Dispatch Center | Cincinnati Traffic Control Center | traffic control priority request |
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| SORTA Transit Dispatch Center | CTC Transit Dispatch | transit traveler information coordination |
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| SORTA Transit Dispatch Center | Local Transit Systems | transit traveler information coordination |
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| SORTA Transit Dispatch Center | Regional Airports | service information request |
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| SORTA Transit Dispatch Center | SORTA Regional Transit Hubs | alarm acknowledge |
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| SORTA Transit Dispatch Center | SORTA Regional Transit Hubs | fare management information |
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| SORTA Transit Dispatch Center | SORTA Transit Information Systems | alarm acknowledge |
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| SORTA Transit Dispatch Center | SORTA Transit Information Systems | fare management information |
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| SORTA Transit Dispatch Center | SORTA Traveler Information System | demand responsive transit plan |
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| SORTA Transit Dispatch Center | TANK Transit System Dispatch | transit traveler information coordination |
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| SORTA Transit Dispatch Center | The Banks Intermodal Center | service information request |
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| SORTA Transit Information Systems | Regional 911 Call Centers | alarm notification |
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| SORTA Transit Information Systems | Regional Operations Center | alarm notification |
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| SORTA Transit Information Systems | Regional Public Safety Dispatch Centers | alarm notification |
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| SORTA Transit Information Systems | SORTA Riverfront Transit Center | alarm notification |
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| SORTA Transit Information Systems | SORTA Transit Dispatch Center | alarm notification |
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| SORTA Transit Information Systems | SORTA Transit Dispatch Center | fare collection data |
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| SORTA Traveler Information System | SORTA Transit Dispatch Center | demand responsive transit request |
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| TANK Regional Transit Hubs | Regional 911 Call Centers | alarm notification |
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| TANK Regional Transit Hubs | Regional Public Safety Dispatch Centers | alarm notification |
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| TANK Regional Transit Hubs | TANK Transit System Dispatch | alarm notification |
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| TANK Regional Transit Hubs | TANK Transit System Dispatch | fare collection data |
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| TANK Transit Information Systems | Regional 911 Call Centers | alarm notification |
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| TANK Transit Information Systems | Regional Public Safety Dispatch Centers | alarm notification |
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| TANK Transit Information Systems | TANK Transit System Dispatch | alarm notification |
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| TANK Transit Information Systems | TANK Transit System Dispatch | fare collection data |
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| TANK Transit System Dispatch | City and County Traffic Control Center | traffic control priority request |
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| TANK Transit System Dispatch | Local Transit Systems | transit traveler information coordination |
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| TANK Transit System Dispatch | Regional Airports | service information request |
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| TANK Transit System Dispatch | TANK Regional Transit Hubs | alarm acknowledge |
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| TANK Transit System Dispatch | TANK Regional Transit Hubs | fare management information |
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| TANK Transit System Dispatch | TANK Transit Information Systems | alarm acknowledge |
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| TANK Transit System Dispatch | TANK Transit Information Systems | fare management information |
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| TANK Transit System Dispatch | TANK Traveler Information System | demand responsive transit plan |
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| TANK Transit System Dispatch | The Banks Intermodal Center | service information request |
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| TANK Traveler Information System | TANK Transit System Dispatch | demand responsive transit request |
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| The Banks Intermodal Center | BCRTA Transit System Dispatch | service information response |
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| The Banks Intermodal Center | CTC Transit Dispatch | service information response |
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| The Banks Intermodal Center | Local Transit Systems | service information response |
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| The Banks Intermodal Center | SORTA Transit Dispatch Center | service information response |
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| The Banks Intermodal Center | TANK Transit System Dispatch | service information response |
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