This solution is used within the U.S.. It combines standards associated with US: NTCIP Warning Device with those for I–F: SNMPv3/TLS. The US: NTCIP Warning Device standards include a composite of upper–layer standards that support monitoring for unsafe traffic activities and displaying warning to drivers. 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.
| 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. |
|---|
| Mgmt | IETF RFC 3411 | An Architecture for Describing Simple Network Management Protocol (SNMP) Management Frameworks | This standard (RFC) defines the basic architecture for SNMPv3 and includes the definition of information objects for managing the SNMP entity's architecture. |
|---|
| Mgmt | IETF RFC 3412 | Message Processing and Dispatching for the Simple Network Management Protocol (SNMP) | This standard (RFC) contains a MIB that assists in managing the message processing and dispatching subsystem of an SNMP entity. |
|---|
| Mgmt | IETF RFC 3413 | Simple Network Management Protocol (SNMP) Applications | This standard (RFC) includes MIBs that allow for the configuration and management of remote Targets, Notifications, and Proxys. |
|---|
| Mgmt | IETF RFC 3414 | User–based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3) | This standard (RFC) contains a MIB that assists in configuring and managing the user–based security model. |
|---|
| Mgmt | IETF RFC 3415 | View–based Access Control Model (VACM) for the Simple Network Management Protocol (SNMP) | This standard (RFC) contains a MIB that supports the configuration and management of the View–based access control model of SNMP. |
|---|
| Mgmt | IETF RFC 3416 | Version 2 of the Protocol Operations for the Simple Network Management Protocol (SNMP) | This standard (RFC) defines the message structure and protocol operations used by SNMPv3. |
|---|
| Mgmt | IETF RFC 3418 | Management Information Base (MIB) for the Simple Network Management Protocol (SNMP) | This standard (RFC) defines the MIB to configure and manage an SNMP entity. |
|---|
| Mgmt | IETF RFC 4293 | Management Information Base for the Internet Protocol (IP) | This standard (RFC) defines the MIB that manages an IP entity. |
|---|
| 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 1209 | NTCIP Object Definitions for Transportation Sensor Systems (TSS) | This standard defines SNMP objects (data elements) to monitor and control transportation system sensors that measure real–time vehicular traffic information. |
|---|
| ITS Application Entity | NTCIP 1205 | NTCIP Objects for CCTV Camera Control | This standard defines SNMP objects (data elements) for control and monitoring of closed–circuit television (CCTV) camera controllers. |
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| ITS Application Entity | NTCIP 1203 | NTCIP Object Definitions for Dynamic Message Signs (DMS) | This standard defines SNMP objects (data elements) for monitoring and controlling dynamic message signs (such as variable message signs). |
|---|
| Facilities | IETF RFC 3411 | An Architecture for Describing Simple Network Management Protocol (SNMP) Management Frameworks | This standard (RFC) defines the basic architecture for SNMPv3 and includes the definition of information objects for managing the SNMP entity's architecture. |
|---|
| Facilities | IETF RFC 3412 | Message Processing and Dispatching for the Simple Network Management Protocol (SNMP) | This standard (RFC) contains a MIB that assists in managing the message processing and dispatching subsystem of an SNMP entity. |
|---|
| Facilities | IETF RFC 3413 | Simple Network Management Protocol (SNMP) Applications | This standard (RFC) includes MIBs that allow for the configuration and management of remote Targets, Notifications, and Proxys. |
|---|
| Facilities | IETF RFC 3414 | User–based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3) | This standard (RFC) contains a MIB that assists in configuring and managing the user–based security model. |
|---|
| Facilities | IETF RFC 3415 | View–based Access Control Model (VACM) for the Simple Network Management Protocol (SNMP) | This standard (RFC) contains a MIB that supports the configuration and management of the View–based access control model of SNMP. |
|---|
| Facilities | IETF RFC 3416 | Version 2 of the Protocol Operations for the Simple Network Management Protocol (SNMP) | This standard (RFC) defines the message structure and protocol operations used by SNMPv3. |
|---|
| Facilities | NTCIP 1209 | NTCIP Object Definitions for Transportation Sensor Systems (TSS) | This standard defines SNMP objects (data elements) to monitor and control transportation system sensors that measure real–time vehicular traffic information. |
|---|
| Facilities | NTCIP 1205 | NTCIP Objects for CCTV Camera Control | This standard defines SNMP objects (data elements) for control and monitoring of closed–circuit television (CCTV) camera controllers. |
|---|
| Facilities | NTCIP 1203 | NTCIP Object Definitions for Dynamic Message Signs (DMS) | This standard defines SNMP objects (data elements) for monitoring and controlling dynamic message signs (such as variable message signs). |
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| TransNet | IETF RFC 2460 | Internet Protocol, Version 6 (IPv6) Specification | This standard (RFC) specifies version 6 of the Internet Protocol (IPv6), also sometimes referred to as IP Next Generation or IPng. |
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| TransNet | IETF RFC 4291 | IP Version 6 Addressing Architecture | This standard (RFC) defines the addressing architecture of the IP Version 6 (IPv6) protocol. It includes the IPv6 addressing model, text representations of IPv6 addresses, definition of IPv6 unicast addresses, anycast addresses, and multicast addresses, and an IPv6 node's required addresses. |
|---|
| TransNet | IETF RFC 4443 | Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6) Specification | This standard (RFC) defines the control messages to manage IPv6. |
|---|
| TransNet | IETF RFC 793 | Transmission Control Protocol | This standard (RFC) defines the main connection–oriented Transport Layer protocol used on Internet–based networks. |
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| Access | NTCIP 2104 | NTCIP SP–Ethernet | This standard defines the Access Layer for center–to–field communications where the local connection is some variant of Ethernet. |
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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 |
|---|
| Use case not considered in design (critical) | High | While the indicated standards nominally address the information flow, the design details may not meet performance or other requirements because this particular use case was not the focus of the design effort. | (None) | City of Green DMS=>work zone warning status=>City of Green Maintenance Dispatch |
|---|
| Use case not considered in design (critical) | High | While the indicated standards nominally address the information flow, the design details may not meet performance or other requirements because this particular use case was not the focus of the design effort. | (None) | City of Akron DMS=>work zone warning status=>City of Akron Maintenance Dispatch |
|---|
| Use case not considered in design (critical) | High | While the indicated standards nominally address the information flow, the design details may not meet performance or other requirements because this particular use case was not the focus of the design effort. | (None) | City of Cuyahoga Falls DMS=>work zone warning status=>City of Barberton Maintenance Dispatch |
|---|
| Use case not considered in design (critical) | High | While the indicated standards nominally address the information flow, the design details may not meet performance or other requirements because this particular use case was not the focus of the design effort. | (None) | City of Kent DMS=>work zone warning status=>City of Kent Maintenance Dispatch |
|---|
| Use case not considered in design (critical) | High | While the indicated standards nominally address the information flow, the design details may not meet performance or other requirements because this particular use case was not the focus of the design effort. | (None) | City of Stow DMS=>work zone warning status=>City of Stow Maintenance Dispatch |
|---|
| Use case not considered in design (critical) | High | While the indicated standards nominally address the information flow, the design details may not meet performance or other requirements because this particular use case was not the focus of the design effort. | (None) | ODOT District 4 DMS=>lane management information=>ODOT ATMS |
|---|
| Use case not considered in design (critical) | High | While the indicated standards nominally address the information flow, the design details may not meet performance or other requirements because this particular use case was not the focus of the design effort. | (None) | ODOT District 4 Lane Control Devices=>lane management information=>ODOT ATMS |
|---|
| Use case not considered in design (critical) | High | While the indicated standards nominally address the information flow, the design details may not meet performance or other requirements because this particular use case was not the focus of the design effort. | (None) | Summit County DMS=>work zone warning status=>Summit County Maintenance Dispatch |
|---|
| Use case not considered in design (critical) | High | While the indicated standards nominally address the information flow, the design details may not meet performance or other requirements because this particular use case was not the focus of the design effort. | (None) | City of Hudson DMS=>work zone warning status=>City of Hudson Maintenance Dispatch |
|---|
| Use case not considered in design (critical) | High | While the indicated standards nominally address the information flow, the design details may not meet performance or other requirements because this particular use case was not the focus of the design effort. | (None) | City of Barberton DMS=>work zone warning status=>City of Barberton Maintenance Dispatch |
|---|
| Use case not considered in design (critical) | High | While the indicated standards nominally address the information flow, the design details may not meet performance or other requirements because this particular use case was not the focus of the design effort. | (None) | City of Twinsburg DMS=>work zone warning status=>City of Twinsburg Maintenance Dispatch |
|---|
| Use case not considered in design (critical) | High | While the indicated standards nominally address the information flow, the design details may not meet performance or other requirements because this particular use case was not the focus of the design effort. | (None) | Other Municipalities DMS=>work zone warning status=>Other Municipalities Maintenance Dispatch |
|---|
| Use case not considered in design (critical) | High | While the indicated standards nominally address the information flow, the design details may not meet performance or other requirements because this particular use case was not the focus of the design effort. | (None) | City of Cuyahoga Falls DMS=>work zone warning status=>City of Cuyahoga Falls Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | ODOT District 4 Speed Monitoring Roadside Equipment=>speed monitoring information=>ODOT District 4 Office |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Green Traffic Operations Center=>speed monitoring control=>City of Green Automated Speed Warning Signs |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Kent DMS=>work zone warning status=>City of Kent Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Stow DMS=>work zone warning status=>City of Stow Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | ODOT ATMS=>speed monitoring control=>ODOT District 4 Speed Monitoring Roadside Equipment |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | ODOT District 4 Maintenance Garages=>speed monitoring control=>ODOT District 4 Speed Monitoring Roadside Equipment |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | ODOT District 4 Office=>speed monitoring control=>ODOT District 4 Speed Monitoring Roadside Equipment |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | ODOT District 4 Speed Monitoring Roadside Equipment=>speed monitoring information=>ODOT District 4 Maintenance Garages |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Green DMS=>work zone warning status=>City of Green Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Akron Traffic Operations Center=>speed monitoring control=>City of Akron Automated Speed Warning Signs |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | ODOT District 4 Speed Monitoring Roadside Equipment=>speed monitoring information=>ODOT ATMS |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Green Automated Speed Warning Signs=>speed monitoring information=>City of Green Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Green Automated Speed Warning Signs=>speed monitoring information=>City of Green Traffic Operations Center |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Cuyahoga Falls Traffic Operations Center=>speed monitoring control=>City of Cuyahoga Falls Automated Speed Warning Signs |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Cuyahoga Falls DMS=>work zone warning status=>City of Barberton Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Cuyahoga Falls DMS=>work zone warning status=>City of Cuyahoga Falls Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Other Municipalities Automated Speed Warning Signs=>speed monitoring information=>Other Municipalities Traffic Operations Centers |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Cuyahoga Falls Automated Speed Warning Signs=>speed monitoring information=>City of Cuyahoga Falls Traffic Operations Center |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Stow Maintenance Dispatch=>work zone warning device control=>City of Stow DMS |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Akron DMS=>work zone warning status=>City of Akron Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Akron Automated Speed Warning Signs=>speed monitoring information=>City of Akron Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Akron Automated Speed Warning Signs=>speed monitoring information=>City of Akron Traffic Operations Center |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Cuyahoga Falls Automated Speed Warning Signs=>speed monitoring information=>City of Cuyahoga Falls Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Cuyahoga Falls Maintenance Dispatch=>speed monitoring control=>City of Cuyahoga Falls Automated Speed Warning Signs |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Twinsburg DMS=>work zone warning status=>City of Twinsburg Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Barberton Maintenance Dispatch=>work zone warning device control=>City of Barberton DMS |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Barberton Maintenance Dispatch=>work zone warning device control=>City of Cuyahoga Falls DMS |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Barberton DMS=>work zone warning status=>City of Barberton Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Twinsburg Maintenance Dispatch=>work zone warning device control=>City of Twinsburg DMS |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Hudson Maintenance Dispatch=>work zone warning device control=>City of Hudson DMS |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Hudson DMS=>work zone warning status=>City of Hudson Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Akron Maintenance Dispatch=>work zone warning device control=>City of Akron DMS |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Other Municipalities Maintenance Dispatch=>work zone warning device control=>Other Municipalities DMS |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Cuyahoga Falls Maintenance Dispatch=>work zone warning device control=>City of Cuyahoga Falls DMS |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Other Municipalities Automated Speed Warning Signs=>speed monitoring information=>Other Municipalities Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Green Maintenance Dispatch=>work zone warning device control=>City of Green DMS |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Green Maintenance Dispatch=>speed monitoring control=>City of Green Automated Speed Warning Signs |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Kent Maintenance Dispatch=>work zone warning device control=>City of Kent DMS |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Summit County Maintenance Dispatch=>work zone warning device control=>Summit County DMS |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Other Municipalities Maintenance Dispatch=>speed monitoring control=>Other Municipalities Automated Speed Warning Signs |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Summit County DMS=>work zone warning status=>Summit County Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Other Municipalities Traffic Operations Centers=>speed monitoring control=>Other Municipalities Automated Speed Warning Signs |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | Other Municipalities DMS=>work zone warning status=>Other Municipalities Maintenance Dispatch |
|---|
| Data not fully defined (medium) | Medium | Some of the data elements for this information flow are not fully defined. | (None) | City of Akron Maintenance Dispatch=>speed monitoring control=>City of Akron Automated Speed Warning Signs |
|---|
| 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) |
|---|
| Source | Destination | Flow |
|---|
| City of Akron Automated Speed Warning Signs | City of Akron Maintenance Dispatch | speed monitoring information |
|---|
| City of Akron Automated Speed Warning Signs | City of Akron Traffic Operations Center | speed monitoring information |
|---|
| City of Akron DMS | City of Akron Maintenance Dispatch | work zone warning status |
|---|
| City of Akron DMS | City of Akron Traffic Operations Center | roadway warning system status |
|---|
| City of Akron Maintenance Dispatch | City of Akron Automated Speed Warning Signs | speed monitoring control |
|---|
| City of Akron Maintenance Dispatch | City of Akron DMS | work zone warning device control |
|---|
| City of Akron Traffic Operations Center | City of Akron Automated Speed Warning Signs | speed monitoring control |
|---|
| City of Akron Traffic Operations Center | City of Akron DMS | roadway warning system control |
|---|
| City of Barberton DMS | City of Barberton Maintenance Dispatch | work zone warning status |
|---|
| City of Barberton DMS | City of Barberton Traffic Operations Center | roadway warning system status |
|---|
| City of Barberton Maintenance Dispatch | City of Barberton DMS | work zone warning device control |
|---|
| City of Barberton Maintenance Dispatch | City of Cuyahoga Falls DMS | work zone warning device control |
|---|
| City of Barberton Traffic Operations Center | City of Barberton DMS | roadway warning system control |
|---|
| City of Cuyahoga Falls Automated Speed Warning Signs | City of Cuyahoga Falls Maintenance Dispatch | speed monitoring information |
|---|
| City of Cuyahoga Falls Automated Speed Warning Signs | City of Cuyahoga Falls Traffic Operations Center | speed monitoring information |
|---|
| City of Cuyahoga Falls DMS | City of Barberton Maintenance Dispatch | work zone warning status |
|---|
| City of Cuyahoga Falls DMS | City of Cuyahoga Falls Maintenance Dispatch | work zone warning status |
|---|
| City of Cuyahoga Falls DMS | City of Cuyahoga Falls Traffic Operations Center | roadway warning system status |
|---|
| City of Cuyahoga Falls Maintenance Dispatch | City of Cuyahoga Falls Automated Speed Warning Signs | speed monitoring control |
|---|
| City of Cuyahoga Falls Maintenance Dispatch | City of Cuyahoga Falls DMS | work zone warning device control |
|---|
| City of Cuyahoga Falls Traffic Operations Center | City of Cuyahoga Falls Automated Speed Warning Signs | speed monitoring control |
|---|
| City of Cuyahoga Falls Traffic Operations Center | City of Cuyahoga Falls DMS | roadway warning system control |
|---|
| City of Green Automated Speed Warning Signs | City of Green Maintenance Dispatch | speed monitoring information |
|---|
| City of Green Automated Speed Warning Signs | City of Green Traffic Operations Center | speed monitoring information |
|---|
| City of Green DMS | City of Green Maintenance Dispatch | work zone warning status |
|---|
| City of Green DMS | City of Green Traffic Operations Center | roadway warning system status |
|---|
| City of Green Maintenance Dispatch | City of Green Automated Speed Warning Signs | speed monitoring control |
|---|
| City of Green Maintenance Dispatch | City of Green DMS | work zone warning device control |
|---|
| City of Green Traffic Operations Center | City of Green Automated Speed Warning Signs | speed monitoring control |
|---|
| City of Green Traffic Operations Center | City of Green DMS | roadway warning system control |
|---|
| City of Hudson DMS | City of Hudson Maintenance Dispatch | work zone warning status |
|---|
| City of Hudson DMS | City of Hudson Traffic Operations Center | roadway warning system status |
|---|
| City of Hudson Maintenance Dispatch | City of Hudson DMS | work zone warning device control |
|---|
| City of Hudson Traffic Operations Center | City of Hudson DMS | roadway warning system control |
|---|
| City of Kent DMS | City of Kent Maintenance Dispatch | work zone warning status |
|---|
| City of Kent DMS | City of Kent Traffic Operations Center | roadway warning system status |
|---|
| City of Kent Maintenance Dispatch | City of Kent DMS | work zone warning device control |
|---|
| City of Kent Traffic Operations Center | City of Kent DMS | roadway warning system control |
|---|
| City of Stow DMS | City of Stow Maintenance Dispatch | work zone warning status |
|---|
| City of Stow DMS | City of Stow Traffic Operations Center | roadway warning system status |
|---|
| City of Stow Maintenance Dispatch | City of Stow DMS | work zone warning device control |
|---|
| City of Stow Traffic Operations Center | City of Stow DMS | roadway warning system control |
|---|
| City of Twinsburg DMS | City of Twinsburg Maintenance Dispatch | work zone warning status |
|---|
| City of Twinsburg DMS | City of Twinsburg Traffic Operations Center | roadway warning system status |
|---|
| City of Twinsburg Maintenance Dispatch | City of Twinsburg DMS | work zone warning device control |
|---|
| City of Twinsburg Traffic Operations Center | City of Twinsburg DMS | roadway warning system control |
|---|
| ODOT ATMS | ODOT District 4 DMS | roadway warning system control |
|---|
| ODOT ATMS | ODOT District 4 Speed Monitoring Roadside Equipment | speed monitoring control |
|---|
| ODOT District 4 DMS | ODOT ATMS | lane management information |
|---|
| ODOT District 4 DMS | ODOT ATMS | roadway warning system status |
|---|
| ODOT District 4 Lane Control Devices | ODOT ATMS | lane management information |
|---|
| ODOT District 4 Maintenance Garages | ODOT District 4 Speed Monitoring Roadside Equipment | speed monitoring control |
|---|
| ODOT District 4 Office | ODOT District 4 Speed Monitoring Roadside Equipment | speed monitoring control |
|---|
| ODOT District 4 RWIS Stations | ODOT District 4 Variable Speed Limit Signs | roadway warning coordination |
|---|
| ODOT District 4 Speed Monitoring Roadside Equipment | ODOT ATMS | speed monitoring information |
|---|
| ODOT District 4 Speed Monitoring Roadside Equipment | ODOT District 4 Maintenance Garages | speed monitoring information |
|---|
| ODOT District 4 Speed Monitoring Roadside Equipment | ODOT District 4 Office | speed monitoring information |
|---|
| ODOT District 4 Variable Speed Limit Signs | ODOT District 4 RWIS Stations | roadway warning coordination |
|---|
| Other Municipalities Automated Speed Warning Signs | Other Municipalities Maintenance Dispatch | speed monitoring information |
|---|
| Other Municipalities Automated Speed Warning Signs | Other Municipalities Traffic Operations Centers | speed monitoring information |
|---|
| Other Municipalities DMS | Other Municipalities Maintenance Dispatch | work zone warning status |
|---|
| Other Municipalities DMS | Other Municipalities Traffic Operations Centers | roadway warning system status |
|---|
| Other Municipalities Maintenance Dispatch | Other Municipalities Automated Speed Warning Signs | speed monitoring control |
|---|
| Other Municipalities Maintenance Dispatch | Other Municipalities DMS | work zone warning device control |
|---|
| Other Municipalities Traffic Operations Centers | Other Municipalities Automated Speed Warning Signs | speed monitoring control |
|---|
| Other Municipalities Traffic Operations Centers | Other Municipalities DMS | roadway warning system control |
|---|
| Summit County DMS | Summit County Maintenance Dispatch | work zone warning status |
|---|
| Summit County DMS | Summit County Traffic Operations Center | roadway warning system status |
|---|
| Summit County Maintenance Dispatch | Summit County DMS | work zone warning device control |
|---|
| Summit County Traffic Operations Center | Summit County DMS | roadway warning system control |
|---|