Roadway Environment --> ITS Roadway Equipment:
environmental conditions
Definitions
environmental conditions (Information Flow): Current road conditions (e.g., surface temperature, subsurface temperature, moisture, icing, treatment status) and surface weather conditions (e.g., air temperature, wind speed, precipitation, visibility) that are measured by environmental sensors.
Roadway Environment (Source Physical Object): 'Roadway Environment' represents the physical condition and geometry of the road surface, markings, signs, and other objects on or near the road surface. It also represents the environmental conditions immediately surrounding the roadway. The roadway environment must be sensed and interpreted to support automated vehicle services. Surrounding conditions may include fog, ice, snow, rain, wind, etc. which will influence the way in which a vehicle can be safely operated on the roadway. The roadway environment must be monitored to enable corrective action and information dissemination regarding roadway conditions which may adversely affect travel. Infrastructure owner/operators can improve the roadway environment to improve the performance and accuracy of vehicle-based sensors that must sense and interpret this environment. Improvements could include changes in the shape, size, design, and materials used in signs, pavement markings, and other road features.
ITS Roadway Equipment (Destination Physical Object): '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.
Included In
This Triple is in the following Service Packages:
- CVO10: Road Weather Information for Freight Carriers
- ST02: Eco-Traffic Signal Timing
- ST03: Eco-Traffic Metering
- TM20: Variable Speed Limits
- VS05: Curve Speed Warning
- VS06: Stop Sign Gap Assist
- VS07: Road Weather Motorist Alert and Warning
- VS08: Queue Warning
- VS15: Infrastructure Enhanced Cooperative Adaptive Cruise Control
- VS16: Automated Vehicle Operations
- WX01: Weather Data Collection
- WX03: Spot Weather Impact Warning
- WX04: Roadway Micro-Prediction
This triple is associated with the following Functional Objects:
This Triple is described by the following Functional View Data Flows:
This Triple has the following triple relationships:
None |
Communication Solutions
No communications solutions identified.Characteristics
None defined |
Interoperability | Description |
---|---|
Not Applicable | Interoperability ratings don't apply per se to some types of interfaces like human interfaces. These interfaces may still benefit from associated standards (e.g., ergonomic and human factors standards for human interfaces), but the primary motive for these standards is not interoperability. |
Security
Information Flow Security | ||||
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Confidentiality | Integrity | Availability | ||
Rating | Not Applicable | Low | Low | |
Basis | Sensor-based information flows by definition have no confidentiality concerns. | While typically security concerns related to sensing ignored, if considered this would be LOW, as the obfuscation or failure of any given environmental sensor is likely to be overcome by the mass of data necessary to draw environmental concluisions. | While typically security concerns related to sensing ignored, if considered this would be LOW, as the obfuscation or failure of any given environmental sensor is likely to be overcome by the mass of data necessary to draw environmental concluisions. |