Multi-Access Edge Computing --> Personal Information Device:
intersection safety warning
This flow may also be implemented by
Connected Vehicle Roadside Equipment --> Personal Information Device: intersection safety warning Definitions
intersection safety warning (Information Flow): A warning of an imminent unsafe vehicle infringement at an intersection that may endanger other vehicles or pedestrians. This allows vehicles approaching the intersection to be warned in the event of an imminent red light or stop sign violation or potential infringement on an occupied crosswalk. All connected vehicles and personal devices near the intersection receive the warning.
Multi-Access Edge Computing (Source Physical Object): 'Multi-Access Edge Computing' ((MEC) previously known as mobile edge computing) represents computing devices that operate and are managed like a cloud server, but are deployed at the edge of a network (typically a cellular network, but it could be any network). While not in strict proximity to the transportation network, these systems do benefit from vastly decreased distances to the roadway compared to central systems, and so can provide lower latency than strictly backoffice systems
Personal Information Device (Destination Physical Object): The 'Personal Information Device' provides the capability for travelers to receive formatted traveler information wherever they are. Capabilities include traveler information, trip planning, and route guidance. Frequently a smart phone, the Personal Information Device provides travelers with the capability to receive route planning and other personally focused transportation services from the infrastructure in the field, at home, at work, or while en-route. Personal Information Devices may operate independently or may be linked with vehicle on-board equipment. This subsystem also supports safety related services with the capability to broadcast safety messages and initiate a distress signal or request for help.
Included In
This Triple is in the following Service Packages:
This triple is associated with the following Functional Objects:
This Triple is described by the following Functional View Data Flows:
- None
This Triple has the following triple relationships:
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Communication Solutions
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US: SAE Other J2735 - Secure Wireless Internet (ITS) (12)
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EU: DEN Service - Secure Wireless Internet (EU) (14)
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(None-Data) - Secure Wireless Internet (ITS) (43)
Selected Solution
US: SAE Other J2735 - Secure Wireless Internet (ITS)Solution Description
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ITS Application Entity
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SAE J2735 ![]() |
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Mgmt
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Facilities
SAE J2735 ![]() |
Security
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TransNet
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Access
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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 | Now |
| Spatial Context | Adjacent |
| Acknowledgement | False |
| Cardinality | Unicast |
| Initiator | Source |
| Authenticable | True |
| Encrypt | False |
| Interoperability | Description |
|---|---|
| National | This triple should be implemented consistently within the geopolitical region through which movement is essentially free (e.g., the United States, the European Union). |
Security
| Information Flow Security | ||||
|---|---|---|---|---|
| Confidentiality | Integrity | Availability | ||
| Rating | Not Applicable | High | Moderate | |
| Basis | This data is intentionally transmitted to everyone via a broadcast. It can also be determined via other visual indicators. | This message is broadcast as a warning, allowing infringing drivers to avoid a collision with a pedestrian and all other drivers to avoid the infringing driver. If this message is falsely broadcast it could cause drivers who think they may be infringing to break suddenly, increasing the chance of a collisions from behind. If it were constantly broadcast incorrectly, it may lead to drivers ignoring this notifications. All of these cases have an impact on safety. NYC believes some scenarios may only require MODERATE, but some do require HIGH. | This message has a very short window in which it is valid. If it is not delivered until after the driver has passed the point of no return before entering the crosswalk, they will not gain any information from it, rendering the application useless. | |
| Security Characteristics | Value |
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| Authenticable | True |
| Encrypt | False |




