Parent Service Package: MC11
< < MC11.6 : MC11.7 : MC12.1 > >

MC11.7: MEC Supported

Multi-Access Edge Computing (MEC) at the local Wide-Area Wireless node receives the signal priority request and processes it at the edge of the WAW network, coordinating with the signal controller to grant priority access to the maintenance vehicle(s), reducing latency and communications network traffic.

Relevant Regions:

Enterprise
Functional
Physical
Goals and Objectives
Needs and Requirements
Sources
Security
Standards
System Requirements

Enterprise

Development Stage Roles and Relationships
(hide)

Source	Destination	Role/Relationship
ITS Roadway Equipment Developer	ITS Roadway Equipment	Develops (hide) An Enterprise creates the target Resource or Document. The Enterprise that engineers a traffic signal controller (ITS Roadway Equipment), or designs a vehicle (Basic Vehicle) or authors a technical standard will have the Develops role.

Installation Stage Roles and Relationships
(hide)

Source	Destination	Role/Relationship
ITS Roadway Equipment Installer	ITS Roadway Equipment	Installs (hide) An Enterprise performs the initial delivery, integration and configuration of the target Resource. This might be a system integrator, a state DOT Enterprise performing its own installation, or a device supplier that performs on-site installation.
ITS Roadway Equipment Owner	ITS Roadway Equipment Installer	Installation Agreement (hide) An agreement whereupon one party installs a system on behalf of a second party.
ITS Roadway Equipment Owner	ITS Roadway Equipment Verifier	Verification Agreement (hide) An agreement for one party to verify that a system owned by the second party operates according to the system's design.

Operations and Maintenance Stage Roles and Relationships
(hide)

Source	Destination	Role/Relationship
ITS Roadway Equipment Maintainer	ITS Roadway Equipment	Maintains (hide) An Enterprise administers the hardware and software that comprise the target Resource. The entity that takes the ‘maintains’ role typically is delegated authority by the entity with the “Owns” or "Manages" roles, depending on the environment. The maintainer interacts with the target Resource so as to keep that Resource in the Operational state.
ITS Roadway Equipment Manager	ITS Roadway Equipment	Manages (hide) The Enterprise that is accountable for performing actions with a Resource, typically in support of one of the key operations-related roles (operates, installs, maintains). This authority is typically delegated by the Enterprise with the "Owns" role, and commonly accomplished by delegation to Human E-Objects with the "operates", "installs" or "maintains" roles, depending on the context.
ITS Roadway Equipment Manager	Maint and Constr Field Personnel	System Usage Agreement (hide) An agreement granting operational use of a system to a Human with the operates role responsible for management of the system.
ITS Roadway Equipment Owner	ITS Roadway Equipment Maintainer	System Maintenance Agreement (hide) An agreement for one party to maintain the operational status of a system on behalf of the party with ownership control of the system.
ITS Roadway Equipment Owner	ITS Roadway Equipment Manager	Operations Agreement (hide) An agreement where one entity agrees to operate a device or application on behalf of another, device/application controlling entity.
ITS Roadway Equipment Supplier	ITS Roadway Equipment Owner	Warranty (hide) A guarantee or promise made by one entity to another, that provides assurance of the functionality and performance of a subsystem.
Maint and Constr Field Personnel	ITS Roadway Equipment	Operates (hide) A Human that is accountable for performing actions with a Resource, typically in support of one of the key operations-related roles (operates, installs, maintains). This is the person at the console or behind the wheel.

Functional

This service package includes the following Functional View PSpecs:

Physical Object	Functional Object	PSpec Number	PSpec Name
ITS Roadway Equipment	Roadway Signal Control	1.1.1.1	Process Traffic Sensor Data
		1.2.7.1	Process Indicator Output Data for Roads
		1.2.7.13	Provide Device Interface for Field Management Stations
		1.2.7.16	Process Signal Control Conflict Monitoring
		1.2.7.2	Monitor Roadside Equipment Operation
		1.2.7.8	Provide Device Interface to Other Roadway Devices

Physical

The physical diagram can be viewed in SVG or PNG format and the current format is SVG.
SVG Diagram
PNG Diagram

Display Legend in SVG or PNG

Includes Physical Objects:

Physical Object	Class	Description
ITS Roadway Equipment	Field	'ITS Roadway Equipment' represents the ITS equipment that is distributed on and along the roadway that monitors and controls traffic and monitors and manages the roadway. This physical object includes traffic detectors, environmental sensors, traffic signals, highway advisory radios, dynamic message signs, CCTV cameras and video image processing systems, grade crossing warning systems, and ramp metering systems. Lane management systems and barrier systems that control access to transportation infrastructure such as roadways, bridges and tunnels are also included. This object also provides environmental monitoring including sensors that measure road conditions, surface weather, and vehicle emissions. Work zone systems including work zone surveillance, traffic control, driver warning, and work crew safety systems are also included.
Maint and Constr Vehicle Operator	Vehicle	The operator of maintenance, construction, or other specialized service vehicles or equipment. Represents the maintenance and construction vehicle operators. The operator provides input specific to maintenance and construction vehicle operations, including the status of maintenance actions. Information provided to the operator includes dispatch requests and maintenance and construction actions to be performed.

Includes Functional Objects:

Functional Object	Description	Physical Object
Roadway Signal Control	'Roadway Signal Control' includes the field elements that monitor and control signalized intersections. It includes the traffic signal controllers, detectors, conflict monitors, signal heads, and other ancillary equipment that supports traffic signal control. It also includes field masters, and equipment that supports communications with a central monitoring and/or control system, as applicable. The communications link supports upload and download of signal timings and other parameters and reporting of current intersection status. It represents the field equipment used in all levels of traffic signal control from basic actuated systems that operate on fixed timing plans through adaptive systems. It also supports all signalized intersection configurations, including those that accommodate pedestrians. In advanced, future implementations, environmental data may be monitored and used to support dilemma zone processing and other aspects of signal control that are sensitive to local environmental conditions.	ITS Roadway Equipment

Includes Information Flows:

Information Flow	Description
driver information	Regulatory, warning, guidance, and other information provided to the driver to support safe and efficient vehicle operation.

Goals and Objectives

Associated Planning Factors and Goals

Planning Factor	Goal

Associated Objective Categories

Objective Category

Associated Objectives and Performance Measures

Objective	Performance Measure

Since the mapping between objectives and service packages is not always straight-forward and often situation-dependent, these mappings should only be used as a starting point. Users should do their own analysis to identify the best service packages for their region.

Needs and Requirements

Need		Functional Object	Requirement

Related Sources

Document Name	Version	Publication Date
None

Security

In order to participate in this service package, each physical object should meet or exceed the following security levels.

Physical Object Security
Physical Object	Confidentiality	Integrity	Availability	Security Class
ITS Roadway Equipment

In order to participate in this service package, each information flow triple should meet or exceed the following security levels.

Information Flow Security
Source	Destination	Information Flow	Confidentiality	Integrity	Availability
Source	Destination	Information Flow	Basis	Basis	Basis
ITS Roadway Equipment	Maint and Constr Vehicle Operator	driver information	Not Applicable	High	Moderate
ITS Roadway Equipment	Maint and Constr Vehicle Operator	driver information	This data is sent to all drivers and is also directly observable, by design.	This is the primary signal trusted by the driver to decide whether to go through the intersection and what speed to go through the intersection at; if it’s wrong, accidents will happen.	If the lights are out you have to get a policeman to direct traffic – expensive and inefficient and may cause a knock-on effect due to lack of coordination with other intersections.

Standards

The following table lists the standards associated with physical objects in this service package. For standards related to interfaces, see the specific information flow triple pages. These pages can be accessed directly from the SVG diagram(s) located on the Physical tab, by clicking on each information flow line on the diagram.

Name	Title	Physical Object
ITE 5201 ATC	Advanced Transportation Controller	ITS Roadway Equipment
ITE 5202 ATC Model 2070	Model 2070 Controller Standard	ITS Roadway Equipment
ITE 5301 ATC ITS Cabinet	Intelligent Transportation System Standard Specification for Roadside Cabinets	ITS Roadway Equipment
ITE 5401 ATC API	Application Programming Interface Standard for the Advanced Transportation Controller	ITS Roadway Equipment
NEMA TS 8 Cyber and Physical Security	Cyber and Physical Security for Intelligent Transportation Systems	ITS Roadway Equipment
NEMA TS2 Traffic Controller Assemblies	Traffic Controller Assemblies with NTCIP Requirements	ITS Roadway Equipment

System Requirements

No System Requirements