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Roadway Freeway Control Equipment Package
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Description:
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Freeway control equipment including ramp meters, mainline metering, and lane control equipment which controls traffic on freeways, including indicators to drivers.
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Included in:
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TxDOT Paris District CCTV
TxDOT Paris District Field Sensors
TxDOT Paris District Lane Use Control Signals
TxDOT Paris District Ramp Meters
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Functional Requirements:
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| 1 | The field element shall include ramp metering controllers, mainline meters, and lane controls for use on freeways, under center control. |
| 2 | The field element shall monitor operation of ramp meter, mainline meters, and lane control indicators and report to the center any instances in which the indicator response does not match that expected from the indicator control information. |
| 3 | The field element shall monitor operation of ramp meter, mainline meters, and lane control indicators and report to the center any instances in which the indicator response does not match that expected from known indicator preemptions. |
| 4 | The field element shall return ramp metering controller, mainline meters, and lane control operational status to the controlling center. |
| 5 | The field element shall return ramp metering controller, mainline meters, and lane control fault data to the maintenance center for repair. |
| 6 | The field element shall provide indications to the driver that a freeway ramp or a lane is available for use, with possible usage data for the freeway lanes they are entering. |
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User Service Requirements (fully or partially addressed):
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| 1.0 | TRAVEL AND TRAFFIC MANAGEMENT |
| 1.5.2 | TSI shall include an Information Access function that allows travelers to access the available information. |
| 1.5.2.5 | Information Access shall provide the capability for travelers to access the TSI information via any of, but not limited to, the following methods: |
| 1.5.2.5(a) | Highway advisory radio. |
| 1.6 | TRAFFIC CONTROL |
| 1.6.0 | ITS shall include a Traffic Control (TC) function. Traffic Control provides the capability to efficiently manage the movement of traffic on streets and highways. Four functions are provided, which are, (1) Traffic Flow Optimization, (2) Traffic Surveillance, (3) Control, and (4) Provide Information. This will also include control of network signal systems with eventual integration of freeway control. |
| 1.6.3 | TC shall include a Device Control function. |
| 1.6.3.3 | The Device Control function shall provide the capability to exercise control over those devices utilized for traffic control. |
| 1.6.3.3.2 | Device Control shall include the capability to dynamically control traffic signing. |
| 1.6.3.3.3 | Device Control shall include the capability to control freeway ramp metering. |
| 1.6.3.4 | Device Control shall communicate control data to the following devices. |
| 1.6.3.4(b) | Ramp meters. |
| 1.6.3.4(c) | Information signs. |
| 1.7 | INCIDENT MANAGEMENT |
| 1.7.0 | ITS shall include an Incident Management (IM) function. Incident Management will identify incidents, formulate response actions, and support initiation and ongoing coordination of those response actions. Four major functions are provided, which are, (1) Incidents Identification, (2) Response Formulation, (3) Response Implementation, and (4) Predict Hazardous Conditions. |
| 1.7.4 | IM shall provide the capability to Predict Hazardous Conditions, including the time and location of hazardous conditions that may cause an incident. |
| 8.0 | MAINTENANCE AND CONSTRUCTION MANAGEMENT |
| 8.1 | MAINTENANCE AND CONSTRUCTION OPERATIONS |
| 8.1.2 | Maintenance and Construction Operations shall provide a Roadway Management (RWM) function to monitor traffic, road surface, and environmental conditions and forecast traffic and road surface conditions to support management of routine and hazardous road condition remediation and to communicate changes in conditions. This function includes interactions among Traffic Managers, Supervisors, Dispatchers, Field Crews, Construction Crews, Asset Managers, Planning Agencies, and Weather Services Organizations. |
| 8.1.2.1 | RWM shall support a number of different services, including but not limited to: |
| 8.1.2.1(e) | Repair activities |
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The detailed process and user service requirement traceability information on this page was extracted from the National ITS Architecture.
Consult the National
ITS Architecture web site for more information.
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Web Spinner Technology.