Physical Object: ITS Roadway Equipment
Roadway Traffic Metering
Overview
'Roadway Traffic Metering' includes the field equipment used to meter traffic on ramps, through interchanges, and on the mainline roadway. The equipment includes dynamic messages signs to provide guidance and information to drivers at and approaching a meter, including information for any special bypass lanes.
This functional object is included in the "ITS Roadway Equipment" physical object.
This functional object is included in the following service packages:
This functional object is mapped to the following Functional View PSpecs:
Requirements
| # | Requirement |
|---|---|
| 01 | The field element shall regulate the flow of traffic on ramps, interchanges, and the mainline, under center control. |
| 02 | The field element shall monitor operation of ramp, interchange, and mainline meters and report to the center any conflicts between received control plans and current system operation. |
| 03 | The field element shall return ramp, interchange, and mainline meter operational status to the controlling center. |
| 04 | The field element shall provide indications to the driver that the metering system is active and provide safe transitions between active and inactive status. |
| 05 | The field element shall return ramp, interchange, and mainline meter fault data to the maintenance center for repair. |
Information Flows
Standards
The following table lists the standards associated with the functional object itself (as opposed to standards associated with an interface).
| Name | Title |
|---|---|
| ITE 5201 ATC | Advanced Transportation Controller |
| ITE 5202 ATC Model 2070 | Model 2070 Controller Standard |
| ITE 5401 ATC API | Application Programming Interface Standard for the Advanced Transportation Controller |
| NEMA TS2 Traffic Controller Assemblies | Traffic Controller Assemblies with NTCIP Requirements |