CMAP Regional ITS Architecture v5.0

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US: NTCIP Message Sign - SNMPv3/TLS

Description

This solution is used within Canada and the U.S.. It combines standards associated with US: NTCIP Message Sign with those for I–F: SNMPv3/TLS. The US: NTCIP Message Sign standards include upper–layer standards required to implement center–to–field message sign 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.
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.
Security	IETF RFC 9456	Updates to the TLS Transport Model for SNMP
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 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).
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 8200	Internet Protocol, Version 6	This document specifies version 6 of the Internet Protocol (IPv6).
TransNet	IETF RFC 9293	Transmission Control Protocol	This document specifies the Transmission Control Protocol (TCP). TCP is an important transport–layer protocol in the Internet protocol stack, and it has continuously evolved over decades of use and growth of the Internet. Over this time, a number of changes have been made to TCP as it was specified in RFC 793, though these have only been documented in a piecemeal fashion. This document collects and brings those changes together with the protocol specification from RFC 793. This document obsoletes RFC 793, as well as RFCs 879, 2873, 6093, 6429, 6528, and 6691 that updated parts of RFC 793. It updates RFCs 1011 and 1122, and it should be considered as a replacement for the portions of those documents dealing with TCP requirements. It also updates RFC 5961 by adding a small clarification in reset handling while in the SYN–RECEIVED state. The TCP header control bits from RFC 793 have also been updated based on RFC 3168.
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.

Readiness: High–Moderate

Readiness Description

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

Issues

Issue	Severity	Description	Associated Standard	Associated Triple
Out of date (medium)	Medium	The standard includes normative references to other standards that have been subject to significant changes that can impact interoperability or security of systems and the industry has not specified if and how these updates should be implemented for deployments of this standard.	IETF RFC 6353 TLS for SNMP	(All)
Update data to SNMPv3	Low	Data has been defined for SNMPv1, but needs to be updated to SNMPv3 format.	(None)	(All)
Use case not considered in design (minor)	Low	While the indicated standards nominally address the information flow, the design may not meet practical constraints because this particular use case was not the focus of the design effort.	(None)	IDOT District 1 Traffic Systems Center (TSC)=>lane management control=>IDOT District 1 Traffic Systems Center Field Equipment
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
Automated Enforcement Cameras	City of Chicago OEMC Field Equipment	dynamic sign coordination
Automated Enforcement Cameras	DuPage County Field Equipment	dynamic sign coordination
Automated Enforcement Cameras	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	dynamic sign coordination
Automated Enforcement Cameras	IDOT District 1 ComCenter Field Equipment	dynamic sign coordination
Automated Enforcement Cameras	IDOT District 1 ComCenter Field Equipment	lane management coordination
Automated Enforcement Cameras	IDOT District 1 Traffic Systems Center Field Equipment	dynamic sign coordination
Automated Enforcement Cameras	IDOT District 1 Traffic Systems Center Field Equipment	lane management coordination
Automated Enforcement Cameras	Illinois Tollway TMC Field Equipment	dynamic sign coordination
Automated Enforcement Cameras	Illinois Tollway TMC Field Equipment	lane management coordination
Automated Enforcement Cameras	Kane County Field Equipment	dynamic sign coordination
Automated Enforcement Cameras	Kane County Field Equipment	lane management coordination
City of Chicago – Skyway Concession Company LLC Field Equipment	City of Chicago – Skyway Concession Company LLC Operations	roadway dynamic signage status
City of Chicago – Skyway Concession Company LLC Field Equipment	City of Chicago OEMC Field Equipment	dynamic sign coordination
City of Chicago – Skyway Concession Company LLC Operations	City of Chicago – Skyway Concession Company LLC Field Equipment	roadway dynamic signage data
City of Chicago Department of Aviation Field Equipment	City of Chicago OEMC Field Equipment	dynamic sign coordination
City of Chicago Department of Aviation Field Equipment	OHare Airport Operations Center	roadway dynamic signage status
City of Chicago DSS Field Equipment	City of Chicago OEMC Field Equipment	dynamic sign coordination
City of Chicago DSS Field Equipment	IDOT District 1 Traffic Systems Center Field Equipment	dynamic sign coordination
City of Chicago DSS Field Equipment	IDOT District 1 Traffic Systems Center Field Equipment	lane management coordination
City of Chicago OEMC Field Equipment	Automated Enforcement Cameras	dynamic sign coordination
City of Chicago OEMC Field Equipment	City of Chicago – Skyway Concession Company LLC Field Equipment	dynamic sign coordination
City of Chicago OEMC Field Equipment	City of Chicago Department of Aviation Field Equipment	dynamic sign coordination
City of Chicago OEMC Field Equipment	City of Chicago DSS Field Equipment	dynamic sign coordination
City of Chicago OEMC Field Equipment	City of Chicago TMC	roadway dynamic signage status
City of Chicago OEMC Field Equipment	Cook County Department of Transportation and Highways Field Equipment	dynamic sign coordination
City of Chicago OEMC Field Equipment	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	dynamic sign coordination
City of Chicago OEMC Field Equipment	IDOT District 1 ComCenter Field Equipment	dynamic sign coordination
City of Chicago OEMC Field Equipment	IDOT District 1 ComCenter Field Equipment	lane management coordination
City of Chicago OEMC Field Equipment	IDOT District 1 Traffic Systems Center Field Equipment	dynamic sign coordination
City of Chicago OEMC Field Equipment	IDOT District 1 Traffic Systems Center Field Equipment	lane management coordination
City of Chicago TMC	City of Chicago OEMC Field Equipment	roadway dynamic signage data
Cook County Department of Transportation and Highways Field Equipment	City of Chicago OEMC Field Equipment	dynamic sign coordination
Cook County Department of Transportation and Highways Field Equipment	Cook County TMC	roadway dynamic signage status
Cook County Department of Transportation and Highways Field Equipment	DuPage County Field Equipment	dynamic sign coordination
Cook County Department of Transportation and Highways Field Equipment	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	dynamic sign coordination
Cook County Department of Transportation and Highways Field Equipment	IDOT District 1 Traffic Systems Center Field Equipment	dynamic sign coordination
Cook County Department of Transportation and Highways Field Equipment	IDOT District 1 Traffic Systems Center Field Equipment	lane management coordination
Cook County Department of Transportation and Highways Field Equipment	Illinois Tollway TMC Field Equipment	dynamic sign coordination
Cook County Department of Transportation and Highways Field Equipment	Illinois Tollway TMC Field Equipment	lane management coordination
Cook County Department of Transportation and Highways Field Equipment	Lake County Field Equipment	dynamic sign coordination
Cook County TMC	Cook County Department of Transportation and Highways Field Equipment	roadway dynamic signage data
DuPage County Field Equipment	Automated Enforcement Cameras	dynamic sign coordination
DuPage County Field Equipment	Cook County Department of Transportation and Highways Field Equipment	dynamic sign coordination
DuPage County Field Equipment	DuPage County TMC	roadway dynamic signage status
DuPage County Field Equipment	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	dynamic sign coordination
DuPage County Field Equipment	Illinois Tollway TMC Field Equipment	dynamic sign coordination
DuPage County Field Equipment	Illinois Tollway TMC Field Equipment	lane management coordination
DuPage County Field Equipment	Kane County Field Equipment	dynamic sign coordination
DuPage County Field Equipment	Kane County Field Equipment	lane management coordination
DuPage County Field Equipment	Municipal/Township Field Equipment	dynamic sign coordination
DuPage County Field Equipment	Will County Field Equipment	dynamic sign coordination
DuPage County TMC	DuPage County Field Equipment	roadway dynamic signage data
Grundy County Field Equipment	Grundy County TMC	roadway dynamic signage status
Grundy County TMC	Grundy County Field Equipment	roadway dynamic signage data
IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	Automated Enforcement Cameras	dynamic sign coordination
IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	City of Chicago OEMC Field Equipment	dynamic sign coordination
IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	DuPage County Field Equipment	dynamic sign coordination
IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	IDOT District 1 Bureau of Traffic – Arterial Signal Operations	roadway dynamic signage status
IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	IDOT District 1 ComCenter	roadway dynamic signage status
IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	IDOT District 1 ComCenter Field Equipment	dynamic sign coordination
IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	IDOT District 1 ComCenter Field Equipment	lane management coordination
IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	IDOT District 1 Traffic Systems Center Field Equipment	dynamic sign coordination
IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	IDOT District 1 Traffic Systems Center Field Equipment	lane management coordination
IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	Illinois Tollway TMC Field Equipment	dynamic sign coordination
IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	Illinois Tollway TMC Field Equipment	lane management coordination
IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	Lake County Field Equipment	dynamic sign coordination
IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	Municipal/Township Field Equipment	dynamic sign coordination
IDOT District 1 Bureau of Traffic – Arterial Signal Operations	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	roadway dynamic signage data
IDOT District 1 ComCenter	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	roadway dynamic signage data
IDOT District 1 ComCenter	IDOT District 1 ComCenter Field Equipment	roadway dynamic signage data
IDOT District 1 ComCenter	IDOT District 1 Traffic Systems Center Field Equipment	roadway dynamic signage data
IDOT District 1 ComCenter Field Equipment	Automated Enforcement Cameras	dynamic sign coordination
IDOT District 1 ComCenter Field Equipment	Automated Enforcement Cameras	lane management coordination
IDOT District 1 ComCenter Field Equipment	City of Chicago OEMC Field Equipment	dynamic sign coordination
IDOT District 1 ComCenter Field Equipment	City of Chicago OEMC Field Equipment	lane management coordination
IDOT District 1 ComCenter Field Equipment	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	dynamic sign coordination
IDOT District 1 ComCenter Field Equipment	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	lane management coordination
IDOT District 1 ComCenter Field Equipment	IDOT District 1 ComCenter	roadway dynamic signage status
IDOT District 1 ComCenter Field Equipment	IDOT District 1 Traffic Systems Center (TSC)	roadway dynamic signage status
IDOT District 1 ComCenter Field Equipment	IDOT District 1 Traffic Systems Center Field Equipment	dynamic sign coordination
IDOT District 1 ComCenter Field Equipment	IDOT District 1 Traffic Systems Center Field Equipment	lane management coordination
IDOT District 1 ComCenter Field Equipment	Illinois Tollway TMC Field Equipment	dynamic sign coordination
IDOT District 1 ComCenter Field Equipment	Illinois Tollway TMC Field Equipment	lane management coordination
IDOT District 1 ComCenter Field Equipment	Lake County Field Equipment	dynamic sign coordination
IDOT District 1 ComCenter Field Equipment	Lake County Field Equipment	lane management coordination
IDOT District 1 Maintenance Management	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	roadway dynamic signage data
IDOT District 1 Traffic Systems Center (TSC)	IDOT District 1 ComCenter Field Equipment	roadway dynamic signage data
IDOT District 1 Traffic Systems Center (TSC)	IDOT District 1 Traffic Systems Center Field Equipment	lane management control
IDOT District 1 Traffic Systems Center (TSC)	IDOT District 1 Traffic Systems Center Field Equipment	roadway dynamic signage data
IDOT District 1 Traffic Systems Center Field Equipment	Automated Enforcement Cameras	dynamic sign coordination
IDOT District 1 Traffic Systems Center Field Equipment	Automated Enforcement Cameras	lane management coordination
IDOT District 1 Traffic Systems Center Field Equipment	City of Chicago DSS Field Equipment	dynamic sign coordination
IDOT District 1 Traffic Systems Center Field Equipment	City of Chicago DSS Field Equipment	lane management coordination
IDOT District 1 Traffic Systems Center Field Equipment	City of Chicago OEMC Field Equipment	dynamic sign coordination
IDOT District 1 Traffic Systems Center Field Equipment	City of Chicago OEMC Field Equipment	lane management coordination
IDOT District 1 Traffic Systems Center Field Equipment	Cook County Department of Transportation and Highways Field Equipment	dynamic sign coordination
IDOT District 1 Traffic Systems Center Field Equipment	Cook County Department of Transportation and Highways Field Equipment	lane management coordination
IDOT District 1 Traffic Systems Center Field Equipment	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	dynamic sign coordination
IDOT District 1 Traffic Systems Center Field Equipment	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	lane management coordination
IDOT District 1 Traffic Systems Center Field Equipment	IDOT District 1 ComCenter	roadway dynamic signage status
IDOT District 1 Traffic Systems Center Field Equipment	IDOT District 1 ComCenter Field Equipment	dynamic sign coordination
IDOT District 1 Traffic Systems Center Field Equipment	IDOT District 1 ComCenter Field Equipment	lane management coordination
IDOT District 1 Traffic Systems Center Field Equipment	IDOT District 1 Traffic Systems Center (TSC)	roadway dynamic signage status
IDOT District 1 Traffic Systems Center Field Equipment	IDOT Toll Plazas / Gantries	dynamic sign coordination
IDOT District 1 Traffic Systems Center Field Equipment	IDOT Toll Plazas / Gantries	lane management coordination
IDOT District 1 Traffic Systems Center Field Equipment	Illinois Tollway TMC Field Equipment	dynamic sign coordination
IDOT District 1 Traffic Systems Center Field Equipment	Illinois Tollway TMC Field Equipment	lane management coordination
IDOT Toll Plazas / Gantries	IDOT District 1 Traffic Systems Center Field Equipment	dynamic sign coordination
IDOT Toll Plazas / Gantries	IDOT District 1 Traffic Systems Center Field Equipment	lane management coordination
Illinois Tollway TMC (TIMS)	Illinois Tollway TMC Field Equipment	roadway dynamic signage data
Illinois Tollway TMC Field Equipment	Automated Enforcement Cameras	dynamic sign coordination
Illinois Tollway TMC Field Equipment	Automated Enforcement Cameras	lane management coordination
Illinois Tollway TMC Field Equipment	Cook County Department of Transportation and Highways Field Equipment	dynamic sign coordination
Illinois Tollway TMC Field Equipment	Cook County Department of Transportation and Highways Field Equipment	lane management coordination
Illinois Tollway TMC Field Equipment	DuPage County Field Equipment	dynamic sign coordination
Illinois Tollway TMC Field Equipment	DuPage County Field Equipment	lane management coordination
Illinois Tollway TMC Field Equipment	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	dynamic sign coordination
Illinois Tollway TMC Field Equipment	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	lane management coordination
Illinois Tollway TMC Field Equipment	IDOT District 1 ComCenter Field Equipment	dynamic sign coordination
Illinois Tollway TMC Field Equipment	IDOT District 1 ComCenter Field Equipment	lane management coordination
Illinois Tollway TMC Field Equipment	IDOT District 1 Traffic Systems Center Field Equipment	dynamic sign coordination
Illinois Tollway TMC Field Equipment	IDOT District 1 Traffic Systems Center Field Equipment	lane management coordination
Illinois Tollway TMC Field Equipment	Illinois Tollway TMC (TIMS)	roadway dynamic signage status
Illinois Tollway TMC Field Equipment	Kane County Field Equipment	dynamic sign coordination
Illinois Tollway TMC Field Equipment	Kane County Field Equipment	lane management coordination
Illinois Tollway TMC Field Equipment	Lake County Field Equipment	dynamic sign coordination
Illinois Tollway TMC Field Equipment	Lake County Field Equipment	lane management coordination
Kane County Field Equipment	Automated Enforcement Cameras	dynamic sign coordination
Kane County Field Equipment	Automated Enforcement Cameras	lane management coordination
Kane County Field Equipment	DuPage County Field Equipment	dynamic sign coordination
Kane County Field Equipment	DuPage County Field Equipment	lane management coordination
Kane County Field Equipment	Illinois Tollway TMC Field Equipment	dynamic sign coordination
Kane County Field Equipment	Illinois Tollway TMC Field Equipment	lane management coordination
Kane County Field Equipment	Kane County TMC	roadway dynamic signage status
Kane County Maintenance Operations	Kane County Field Equipment	roadway dynamic signage data
Kane County TMC	Kane County Field Equipment	roadway dynamic signage data
Kendall County Field Equipment	Kendall County TMC	roadway dynamic signage status
Kendall County TMC	Kendall County Field Equipment	roadway dynamic signage data
Lake County Field Equipment	Cook County Department of Transportation and Highways Field Equipment	dynamic sign coordination
Lake County Field Equipment	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	dynamic sign coordination
Lake County Field Equipment	IDOT District 1 ComCenter Field Equipment	dynamic sign coordination
Lake County Field Equipment	IDOT District 1 ComCenter Field Equipment	lane management coordination
Lake County Field Equipment	Illinois Tollway TMC Field Equipment	dynamic sign coordination
Lake County Field Equipment	Illinois Tollway TMC Field Equipment	lane management coordination
Lake County Field Equipment	Lake County Highway Maintenance Operations	roadway dynamic signage status
Lake County Field Equipment	Lake County PASSAGE TMC	roadway dynamic signage status
Lake County Highway Maintenance Operations	Lake County Field Equipment	roadway dynamic signage data
Lake County PASSAGE TMC	Lake County Field Equipment	roadway dynamic signage data
McHenry County Field Equipment	McHenry County Maintenance Operations	roadway dynamic signage status
McHenry County Field Equipment	McHenry County TMC	roadway dynamic signage status
McHenry County Maintenance Operations	McHenry County Field Equipment	roadway dynamic signage data
McHenry County TMC	McHenry County Field Equipment	roadway dynamic signage data
Municipal/Township Field Equipment	DuPage County Field Equipment	dynamic sign coordination
Municipal/Township Field Equipment	IDOT District 1 Bureau of Traffic – Arterial Operations Field Equipment	dynamic sign coordination
OHare Airport Operations Center	City of Chicago Department of Aviation Field Equipment	roadway dynamic signage data
Will County Field Equipment	DuPage County Field Equipment	dynamic sign coordination
Will County Field Equipment	Will County TMC	roadway dynamic signage status
Will County TMC	Will County Field Equipment	roadway dynamic signage data