Wayside Equipment --> ITS Roadway Equipment:
track status
Definitions
track status (Information Flow): Current status of the wayside equipment and notification of an arriving train.
Wayside Equipment (Source Physical Object): 'Wayside Equipment' represents train interface equipment (usually) maintained and operated by the railroad and (usually) physically located at or near a grade crossing. It is a source and destination for information for, or about, approaching trains and their crews (e.g. the time at which the train will arrive and the time it will take to clear a crossing, crossing status or warnings, etc.). Generally one wayside equipment interface would be associated with one highway rail intersection. However, multiple crossings may be controlled using information based on data from one wayside equipment interface.
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:
- PT09: Transit Signal Priority
- TM13: Standard Railroad Grade Crossing
- TM14: Advanced Railroad Grade Crossing
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
- (None-Data) - Secure Internet (ITS) (43)
Selected Solution
Solution Description
ITS Application Entity
Development needed |
Click gap icons for more info.
|
||
Mgmt
|
Facilities
Development needed |
Security
|
|
TransNet
|
|||
Access
Internet Subnet Alternatives |
TempBCL2 TempSTDL2
TempBCL3 TempSTDL3
TempBCL4 TempSTDL4
TempBCL5 TempSTDL5
Access Access
TempBCL2 TempSTDL2
TempBCL3 TempSTDL3
TempBCL4 TempSTDL4
TempBCL5 TempSTDL5
ITS Application ITS Application
TempBCL2 TempSTDL2
TempBCL3 TempSTDL3
TempBCL4 TempSTDL4
TempBCL5 TempSTDL5
Mgmt Mgmt
TempBCL2 TempSTDL2
TempBCL3 TempSTDL3
TempBCL4 TempSTDL4
TempBCL5 TempSTDL5
Facility Facility
TempBCL2 TempSTDL2
TempBCL3 TempSTDL3
TempBCL4 TempSTDL4
TempBCL5 TempSTDL5
Security Security
TempBCL2 TempSTDL2
TempBCL3 TempSTDL3
TempBCL4 TempSTDL4
TempBCL5 TempSTDL5
Note that some layers might have alternatives, in which case all of the gap icons associated with every alternative may be shown on the diagram, but the solution severity calculations (and resulting ordering of solutions) includes only the issues associated with the default (i.e., best, least severe) alternative.
Characteristics
Characteristic | Value |
---|---|
Time Context | Recent |
Spatial Context | Adjacent |
Acknowledgement | False |
Cardinality | Unicast |
Initiator | Source |
Authenticable | True |
Encrypt | False |
Interoperability | Description |
---|---|
Local | In cases where an interface is normally encapsulated by a single stakeholder, interoperability is still desirable, but the motive is vendor independence and the efficiencies and choices that an open standards-based interface provides. |
Security
Information Flow Security | ||||
---|---|---|---|---|
Confidentiality | Integrity | Availability | ||
Rating | Low | Moderate | Moderate | |
Basis | Track status is typically physically viewable information. | This information is important, but if it is incorrect there are other safety systems that should prevent related incidents. The impact of any rail/road intersection is particularly high, but in this case a MODERATE rating can be justified by the alternative mechanisms. | This information is important, but if it is not reported there are other safety systems that should prevent related incidents. The impact of any rail/road intersection is particularly high, but in this case a MODERATE rating can be justified by the alternative mechanisms. |
Security Characteristics | Value |
---|---|
Authenticable | True |
Encrypt | False |