Link Type: Human Interface

ITS Roadway Equipment --> Pedestrians:
crossing permission


crossing permission (Information Flow): Information provided to guide and warn pedestrians at crossings including crossing permission, crossing time remaining, and real-time warnings of safety threats.

ITS Roadway Equipment (Source 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 itself. In CVRIA, this physical object represents all of the other ITS field equipment that interfaces with and supports the Connected Vehicle Roadside Equipment (RSE). 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.

Pedestrians (Destination Physical Object): 'Pedestrians' participate in connected vehicle applications that support safe, shared use of the transportation network by motorized and non-motorized transportation modes. Representing those using non-motorized travel modes, pedestrians provide input (e.g. a call signal requesting right of way at an intersection) and may be detected by connected vehicle applications to improve safety. Note that pedestrians represent all non-motorized users, including bicyclists.

Included In

This Information Flow is in the following Applications:

This Information Flow is in the following Application Objects:

Communication Diagrams

The destination physical object, "Pedestrians", is a human interface and so there is no associated communications diagram for this triple.



None defined


This information flow triple is in the following applications with the following security levels.

Information Flow Security
Application Confidentiality Integrity Availability
Basis Basis Basis
Pedestrian in Signalized Crosswalk Warning Not Applicable High Low
This data is intentionally transmitted to everyone via a broadcast. Although pedestrians have a responsibility to make sure the road is safe before they cross, they may react instinctively to incorrect information and be led to cross at unsafe times if they get incorrect information. Also, if the traffic signals are wrong and an accident happens, the pedestrian involved could sue, causing financial loss and other undesirable outcomes. It is easy to tell whether this information flow is available and pedestrians are used to using crosswalks that do not provide this service.