Pedestrian --> ITS Roadway Equipment:
crossing call
Definitions
crossing call (Information Flow): Non-motorized user request to cross the roadway. This is an overt request from a pedestrian, micromobility vehicle user (e.g., cyclist), or other vulnerable road user. This overt request may be a physical button push or hovering or gesturing in the vicinity of the button that supports contactless activation.
Pedestrian (Source Physical Object): The 'Pedestrian' represents a person traveling on foot. Pedestrians participate in ITS services that support safe, shared use of the transportation network. Included are visually impaired travelers who travel through portions of the transportation network and interact with ITS systems. They provide input (e.g. a call signal requesting right of way at an intersection) and may be detected by ITS services to improve safety
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:
- ST02: Eco-Traffic Signal Timing
- TM03: Traffic Signal Control
- TM04: Connected Vehicle Traffic Signal System
- TM13: Standard Railroad Grade Crossing
- TM14: Advanced Railroad Grade Crossing
- VS12: Vulnerable Road User Safety
This triple is associated with the following Functional Objects:
- Roadway Advanced Rail Crossing
- Roadway Mixed Use Crossing Safety
- Roadway Signal Control
- Roadway Standard Rail Crossing
This Triple is described by the following Functional View Data Flows:
This Triple has the following triple relationships:
| Relationship | Source | Destination | Flow |
|---|---|---|---|
| Request-Response | ITS Roadway Equipment | Pedestrian | crossing permission |
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 | ||||
|---|---|---|---|---|
| Confidentiality | Integrity | Availability | ||
| Rating | Not Applicable | High | Low | |
| Basis | The "Not Applicable" group includes information flows that do not actually carry information; for example, flows that represent the physical environment. | Although pedestrians have a responsibility to make sure the road is safe before they cross, and should ensure that they are detected by pedestrian detection systems, they may not always be detected and be led to cross at unsafe times if the ITS RE obtains incorrect information. | It is easy to tell whether this information flow is available and pedestrians are used to using crosswalks that do not provide this service. | |