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PT11: Transit Pedestrian Indication

The Transit Pedestrian Indication service package provides vehicle to device communications to inform pedestrians at a station or stop about the presence of a transit vehicle. In addition, this service package would inform the transit vehicle operator about the presence of pedestrians nearby and those waiting for the transit vehicle. It would help prevent collisions between transit vehicles and pedestrians.

Relevant Regions: Australia, Canada, European Union, and United States

Enterprise
Functional
Physical
Goals and Objectives
Needs and Requirements
Sources
Security
Standards
System Requirements

Enterprise

Development Stage Roles and Relationships
(hide)

Source	Destination	Role/Relationship
Basic Transit Vehicle Developer	Basic Transit Vehicle	Develops (hide) An Enterprise creates the target Resource or Document. The Enterprise that engineers a traffic signal controller (ITS Roadway Equipment), or designs a vehicle (Basic Vehicle) or authors a technical standard will have the Develops role.
Basic Transit Vehicle Developer	Transit Vehicle OBE Developer	Application Interface Specification (hide) The definition of an interface between two application components that operate on two distinct pieces of hardware. The Application Interface Specification is specific to the application in question.
Personal Information Device Developer	Personal Information Device	Develops (hide) An Enterprise creates the target Resource or Document. The Enterprise that engineers a traffic signal controller (ITS Roadway Equipment), or designs a vehicle (Basic Vehicle) or authors a technical standard will have the Develops role.
Personal Information Device Developer	Transit Vehicle OBE Developer	Application Interface Specification (hide) The definition of an interface between two application components that operate on two distinct pieces of hardware. The Application Interface Specification is specific to the application in question.
Transit Vehicle OBE Developer	Personal Information Device Developer	Application Interface Specification (hide) The definition of an interface between two application components that operate on two distinct pieces of hardware. The Application Interface Specification is specific to the application in question.
Transit Vehicle OBE Developer	Transit Vehicle OBE	Develops (hide) An Enterprise creates the target Resource or Document. The Enterprise that engineers a traffic signal controller (ITS Roadway Equipment), or designs a vehicle (Basic Vehicle) or authors a technical standard will have the Develops role.

Installation Stage Roles and Relationships
(hide)

Source	Destination	Role/Relationship
Basic Transit Vehicle Installer	Basic Transit Vehicle	Installs (hide) An Enterprise performs the initial delivery, integration and configuration of the target Resource. This might be a system integrator, a state DOT Enterprise performing its own installation, or a device supplier that performs on-site installation.
Basic Transit Vehicle Owner	Basic Transit Vehicle Installer	Installation Agreement (hide) An agreement whereupon one party installs a system on behalf of a second party.
Basic Transit Vehicle Owner	Basic Transit Vehicle Verifier	Verification Agreement (hide) An agreement for one party to verify that a system owned by the second party operates according to the system's design.
Personal Information Device Installer	Personal Information Device	Installs (hide) An Enterprise performs the initial delivery, integration and configuration of the target Resource. This might be a system integrator, a state DOT Enterprise performing its own installation, or a device supplier that performs on-site installation.
Personal Information Device Owner	Personal Information Device Installer	Installation Agreement (hide) An agreement whereupon one party installs a system on behalf of a second party.
Personal Information Device Owner	Personal Information Device Verifier	Verification Agreement (hide) An agreement for one party to verify that a system owned by the second party operates according to the system's design.
Transit Vehicle OBE Installer	Transit Vehicle OBE	Installs (hide) An Enterprise performs the initial delivery, integration and configuration of the target Resource. This might be a system integrator, a state DOT Enterprise performing its own installation, or a device supplier that performs on-site installation.
Transit Vehicle OBE Owner	Transit Vehicle OBE Installer	Installation Agreement (hide) An agreement whereupon one party installs a system on behalf of a second party.
Transit Vehicle OBE Owner	Transit Vehicle OBE Verifier	Verification Agreement (hide) An agreement for one party to verify that a system owned by the second party operates according to the system's design.

Operations and Maintenance Stage Roles and Relationships
(hide)

Source	Destination	Role/Relationship
Basic Transit Vehicle Maintainer	Basic Transit Vehicle	Maintains (hide) An Enterprise administers the hardware and software that comprise the target Resource. The entity that takes the 'maintains' role typically is delegated authority by the entity with the "Owns" or "Manages" roles, depending on the environment. The maintainer interacts with the target Resource so as to keep that Resource in the Operational state.
Basic Transit Vehicle Manager	Basic Transit Vehicle	Manages (hide) The Enterprise that is accountable for performing actions with a Resource, typically in support of one of the key operations-related roles (operates, installs, maintains). This authority is typically delegated by the Enterprise with the "Owns" role, and commonly accomplished by delegation to Human E-Objects with the "operates", "installs" or "maintains" roles, depending on the context.
Basic Transit Vehicle Manager	Transit Vehicle Operator	System Usage Agreement (hide) An agreement granting operational use of a system to a Human with the operates role responsible for management of the system.
Basic Transit Vehicle Owner	Basic Transit Vehicle Maintainer	System Maintenance Agreement (hide) An agreement for one party to maintain the operational status of a system on behalf of the party with ownership control of the system.
Basic Transit Vehicle Owner	Basic Transit Vehicle Manager	Operations Agreement (hide) An agreement where one entity agrees to operate a device or application on behalf of another, device/application controlling entity.
Basic Transit Vehicle Owner	Transit Vehicle OBE Maintainer	Maintenance Data Exchange Agreement (hide) An agreement that states one entity will provide data related to maintenance of an application component to the other entity.
Basic Transit Vehicle Owner	Transit Vehicle OBE Owner	Expectation of Data Provision (hide) An expectation where one party believes another party will provide data on a regular and recurring basis, and that that data will be useful to the receiver in the context of the receiver's application. This thus includes some expectation of data fields, timeliness, quality, precision and similar qualities of data.
Basic Transit Vehicle Owner	Transit Vehicle OBE User	Service Usage Agreement (hide) An agreement between the provider of a service and a user. Stipulates the terms and conditions of service usage.
Basic Transit Vehicle Owner	Transit Vehicle Operator	Application Usage Agreement (hide) An agreement in which one entity that controls an application component's use gives the other entity the necessary tools and permission to operate that application or application component.
Basic Transit Vehicle Owner	Transit Vehicle Operator	Vehicle Operating Agreement (hide) An agreement whereupon the controller of a vehicle grants another entity permission and rights to operate the vehicle.
Basic Transit Vehicle Supplier	Basic Transit Vehicle Owner	Warranty (hide) A guarantee or promise made by one entity to another, that provides assurance of the functionality and performance of a subsystem.
Personal Information Device Maintainer	Personal Information Device	Maintains (hide) An Enterprise administers the hardware and software that comprise the target Resource. The entity that takes the 'maintains' role typically is delegated authority by the entity with the "Owns" or "Manages" roles, depending on the environment. The maintainer interacts with the target Resource so as to keep that Resource in the Operational state.
Personal Information Device Manager	Personal Information Device	Manages (hide) The Enterprise that is accountable for performing actions with a Resource, typically in support of one of the key operations-related roles (operates, installs, maintains). This authority is typically delegated by the Enterprise with the "Owns" role, and commonly accomplished by delegation to Human E-Objects with the "operates", "installs" or "maintains" roles, depending on the context.
Personal Information Device Manager	Traveler	System Usage Agreement (hide) An agreement granting operational use of a system to a Human with the operates role responsible for management of the system.
Personal Information Device Owner	Personal Information Device Maintainer	System Maintenance Agreement (hide) An agreement for one party to maintain the operational status of a system on behalf of the party with ownership control of the system.
Personal Information Device Owner	Personal Information Device Manager	Operations Agreement (hide) An agreement where one entity agrees to operate a device or application on behalf of another, device/application controlling entity.
Personal Information Device Owner	Transit Vehicle OBE Maintainer	Maintenance Data Exchange Agreement (hide) An agreement that states one entity will provide data related to maintenance of an application component to the other entity.
Personal Information Device Owner	Transit Vehicle OBE Owner	Information Provision and Action Agreement (hide) An agreement where one party agrees to provide information to another party. This is a unidirectional agreement. This also includes a specification for action that shall, should or may be taken by one party in response to this information.
Personal Information Device Owner	Transit Vehicle OBE User	Service Usage Agreement (hide) An agreement between the provider of a service and a user. Stipulates the terms and conditions of service usage.
Personal Information Device Owner	Transit Vehicle Operator	Application Usage Agreement (hide) An agreement in which one entity that controls an application component's use gives the other entity the necessary tools and permission to operate that application or application component.
Personal Information Device Supplier	Personal Information Device Owner	Warranty (hide) A guarantee or promise made by one entity to another, that provides assurance of the functionality and performance of a subsystem.
Transit Vehicle OBE Maintainer	Transit Vehicle OBE	Maintains (hide) An Enterprise administers the hardware and software that comprise the target Resource. The entity that takes the 'maintains' role typically is delegated authority by the entity with the "Owns" or "Manages" roles, depending on the environment. The maintainer interacts with the target Resource so as to keep that Resource in the Operational state.
Transit Vehicle OBE Manager	Transit Vehicle OBE	Manages (hide) The Enterprise that is accountable for performing actions with a Resource, typically in support of one of the key operations-related roles (operates, installs, maintains). This authority is typically delegated by the Enterprise with the "Owns" role, and commonly accomplished by delegation to Human E-Objects with the "operates", "installs" or "maintains" roles, depending on the context.
Transit Vehicle OBE Manager	Transit Vehicle Operator	System Usage Agreement (hide) An agreement granting operational use of a system to a Human with the operates role responsible for management of the system.
Transit Vehicle OBE Owner	Personal Information Device Maintainer	Maintenance Data Exchange Agreement (hide) An agreement that states one entity will provide data related to maintenance of an application component to the other entity.
Transit Vehicle OBE Owner	Personal Information Device Owner	Expectation of Data Provision (hide) An expectation where one party believes another party will provide data on a regular and recurring basis, and that that data will be useful to the receiver in the context of the receiver's application. This thus includes some expectation of data fields, timeliness, quality, precision and similar qualities of data.
Transit Vehicle OBE Owner	Personal Information Device User	Service Usage Agreement (hide) An agreement between the provider of a service and a user. Stipulates the terms and conditions of service usage.
Transit Vehicle OBE Owner	Transit Vehicle OBE Maintainer	System Maintenance Agreement (hide) An agreement for one party to maintain the operational status of a system on behalf of the party with ownership control of the system.
Transit Vehicle OBE Owner	Transit Vehicle OBE Manager	Operations Agreement (hide) An agreement where one entity agrees to operate a device or application on behalf of another, device/application controlling entity.
Transit Vehicle OBE Owner	Traveler	Application Usage Agreement (hide) An agreement in which one entity that controls an application component's use gives the other entity the necessary tools and permission to operate that application or application component.
Transit Vehicle OBE Owner	Traveler	Vehicle Operating Agreement (hide) An agreement whereupon the controller of a vehicle grants another entity permission and rights to operate the vehicle.
Transit Vehicle OBE Supplier	Transit Vehicle OBE Owner	Warranty (hide) A guarantee or promise made by one entity to another, that provides assurance of the functionality and performance of a subsystem.
Transit Vehicle Operator	Basic Transit Vehicle	Operates (hide) A Human that is accountable for performing actions with a Resource, typically in support of one of the key operations-related roles (operates, installs, maintains). This is the person at the console or behind the wheel.
Transit Vehicle Operator	Transit Vehicle OBE	Operates (hide) A Human that is accountable for performing actions with a Resource, typically in support of one of the key operations-related roles (operates, installs, maintains). This is the person at the console or behind the wheel.
Traveler	Personal Information Device	Operates (hide) A Human that is accountable for performing actions with a Resource, typically in support of one of the key operations-related roles (operates, installs, maintains). This is the person at the console or behind the wheel.

Functional

This service package includes the following Functional View PSpecs:

Physical Object	Functional Object	PSpec Number	PSpec Name
Personal Information Device	Personal Pedestrian Safety	6.8.1.3	Process Personal Portable Device Location Data
		6.8.2.3	Monitor Pedestrian Safety Status
		6.8.2.4	Provide Pedestrian Personal Interface
		6.8.3.3	Provide Traveler Personal Interface
		6.8.3.6	Provide Personal Safety Messages
	Personal Trip Planning and Route Guidance	6.8.1.1.1	Determine Personal Portable Device Guidance Method
		6.8.1.1.2	Provide Personal Portable Device Dynamic Guidance
		6.8.1.1.3	Provide Personal Portable Device Autonomous Guidance
		6.8.1.2	Provide Personal Portable Device Guidance Interface
		6.8.3.1	Get Traveler Personal Request
		6.8.3.2	Provide Traveler with Personal Travel Information
		6.8.3.3	Provide Traveler Personal Interface
		6.8.3.5	Provide Traveler Transit Services Interface
		7.5.3	Provide Personal Payment Device Interface
Transit Vehicle OBE	Transit Vehicle On-Board Information Services	4.1.1	Process On-Board Systems Data
		4.1.2	Determine Transit Vehicle Service Status
		4.1.7	Provide Transit Advisory Interface on Vehicle
		4.6.2	Determine Traveler Needs on Vehicle
	Transit Vehicle Pedestrian Safety	4.1.3	Provide Transit Vehicle Location Data
Vehicle	Vehicle Basic Safety Communication	3.1.1	Produce Collision and Crash Avoidance Data
		3.1.3	Process Vehicle On-board Data
		3.1.4	Communicate with Remote Vehicles
		3.1.6	Provide Vehicle Acceleration and Deceleration Inputs
		3.2.3.2	Manage Platoon Following
		3.2.3.3	Process Data for Vehicle Actuators
		3.2.3.5.1	Process General Vehicle Sensor Data
		3.2.4	Process Sensor Data for Automatic Vehicle Operations
		6.7.1.3	Process Vehicle Location Data
		6.7.1.4	Update Vehicle Navigable Map Database
		6.7.3.2	Provide Driver Information Interface

Physical

The physical diagram can be viewed in SVG or PNG format and the current format is SVG.
SVG Diagram
PNG Diagram

Display Legend in SVG or PNG

Includes Physical Objects:

Physical Object	Class	Description
Basic Transit Vehicle	Vehicle	The 'Basic Transit Vehicle' represents the transit vehicle that hosts the on-board equipment that provides ITS functions. It includes a specialized and extended databus that is subject to different vehicle databus standards and hosts a broad range of components that are unique to a transit vehicle including the farebox and associated electronics, passenger counters, and transit security systems. The Transit Vehicle may represent a bus, paratransit vehicle, light rail vehicle, or other vehicle designed to carry passengers.
Personal Information Device	Personal	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.
Transit Vehicle OBE	Vehicle	The 'Transit Vehicle On-Board Equipment' (OBE) resides in a transit vehicle and provides the sensory, processing, storage, and communications functions necessary to support safe and efficient movement of passengers. The types of transit vehicles containing this physical object include buses, paratransit vehicles, light rail vehicles, other vehicles designed to carry passengers, and supervisory vehicles. It collects ridership levels and supports electronic fare collection. It supports a traffic signal prioritization function that communicates with the roadside physical object to improve on-schedule performance. Automated vehicle location enhances the information available to the transit operator enabling more efficient operations. On-board sensors support transit vehicle maintenance. The physical object supports on-board security and safety monitoring. This monitoring includes transit user or vehicle operator activated alarms (silent or audible), as well as surveillance and sensor equipment. The surveillance equipment includes video (e.g. CCTV cameras), audio systems and/or event recorder systems. It also furnishes travelers with real-time travel information, continuously updated schedules, transfer options, routes, and fares. A separate 'Vehicle OBE' physical object supports the general vehicle safety and driver information capabilities that apply to all vehicles, including transit vehicles. The Transit Vehicle OBE supplements these general capabilities with capabilities that are specific to transit vehicles.
Transit Vehicle Operator	Vehicle	The 'Transit Vehicle Operator' represents the person that receives and provides additional information that is specific to operating the ITS functions in all types of transit vehicles. The information received by the operator would include status of on-board systems. Additional information received depends upon the type of transit vehicle. In the case of fixed route transit vehicles, the Transit Vehicle Operator would receive operator instructions that might include actions to take to correct schedule deviations. In the case of flexible fixed routes and demand response routes the information would also include dynamic routing or passenger pickup information.
Traveler	Personal	The 'Traveler' represents any individual who uses transportation services. The interfaces to the traveler provide general pre-trip and en-route information supporting trip planning, personal guidance, and requests for assistance in an emergency that are relevant to all transportation system users. It also represents users of a public transportation system and addresses interfaces these users have within a transit vehicle or at transit facilities such as roadside stops and transit centers.

Includes Functional Objects:

Functional Object	Description	Physical Object
Personal Pedestrian Safety	'Personal Pedestrian Safety' improves pedestrian, cyclist, and other vulnerable road user safety by providing personal location information to the infrastructure that can be used to avoid collisions involving vulnerable road users. It may also alert the vulnerable road user of unsafe conditions, augmenting or extending information provided by signals and signs. The information provided and the user interface delivery mechanism (visual, audible, or haptic) can also be tailored to the needs of the user that is carrying or wearing the device that hosts the application.	Personal Information Device
Personal Trip Planning and Route Guidance	'Personal Trip Planning and Route Guidance' provides a personalized trip plan to the traveler. The trip plan is calculated based on preferences and constraints supplied by the traveler and provided to the traveler for confirmation. Coordination may continue during the trip so that the route plan can be modified to account for new information. Many equipment configurations are possible including systems that provide a basic trip plan to the traveler as well as more sophisticated systems that can provide transition by transition guidance to the traveler along a multi-modal route with transfers. Devices represented by this functional object include desktop computers at home, work, or at major trip generation sites, plus personal devices such as tablets and smart phones.	Personal Information Device
Transit Vehicle On-Board Information Services	'Transit Vehicle On-board Information Services' furnishes en route transit users with real-time travel-related information on-board a transit vehicle. Current information that can be provided to transit users includes transit routes, schedules, transfer options, fares, real-time schedule adherence, current incidents, weather conditions, non-motorized transportation services, and special events are provided. In addition to tailored information for individual transit users, it also supports general annunciation and/or display of general schedule information, imminent arrival information, and other information of general interest to transit users.	Transit Vehicle OBE
Transit Vehicle Pedestrian Safety	'Transit Vehicle Pedestrian Safety' exchanges current location and motion information with pedestrian-carried devices in the vicinity and uses that information to warn the driver of pedestrians in the vehicle's path. Information from on-board sensors (e.g., radars and image processing) are used to augment the short range communications, if available. In addition to notifying the driver, control information can also be provided to support automated control functions that can avoid the collision.	Transit Vehicle OBE
Vehicle Basic Safety Communication	'Vehicle Basic Safety Communication' exchanges current vehicle characteristics, location, and motion (including past and intended maneuver) information with other vehicles in the vicinity, uses that information to calculate vehicle paths, and warns the driver when the potential for an impending collision is detected. If available, map data is used to filter and interpret the relative location and motion of vehicles in the vicinity. Information from on-board sensors (e.g., radars and image processing) are also used, if available, in combination with the V2V communications to detect non-equipped vehicles and corroborate connected vehicle data. This object represents a broad range of implementations ranging from basic Vehicle Awareness Devices that only broadcast vehicle location and motion and provide no driver warnings to advanced integrated safety systems that coordinate maneuvers and may, in addition to warning the driver, provide collision warning information to support automated control functions that can support control intervention.	Vehicle

Includes Information Flows:

Information Flow	Description
host transit vehicle status	Information provided to the ITS on-board equipment from other systems on the Transit Vehicle Platform.
personal location	The current location (latitude, longitude, and elevation) reported by the personal information or safety device
transit user information	Information about individual transit users boarding a transit vehicle, used to track a user's progress on a scheduled transit trip.
transit vehicle information	Information about the transit vehicle route and stops, including current location along the route and next stop.
transit vehicle operator display	Visual, audible, and tactile outputs to the transit vehicle operator including vehicle surveillance information, alarm information, vehicle system status, information from the operations center, and information indicating the status of all other on-board ITS services.
transit vehicle operator input	Transit vehicle operator inputs to on-board ITS equipment, including tactile and verbal inputs. Includes authentication information, on-board system control, emergency requests, and fare transaction data.
traveler input	User input from a traveler to summon assistance, request travel information, make a reservation, or request any other traveler service.
traveler interface updates	Visual or audio information (e.g., routes, messages, guidance, emergency information) that is provided to the traveler.
vehicle location and motion	Data describing the vehicle's location in three dimensions, heading, speed, acceleration, braking status, and size.

Goals and Objectives

Associated Planning Factors and Goals

Planning Factor	Goal
B. Increase the safety of the transportation system for motorized and nonmotorized users;	Reduce fatalities and injuries
C. Increase the security of the transportation system for motorized and nonmotorized users;	Improve security
D. Increase the accessibility and mobility of people and for freight;	Reduce congestion

Associated Objective Categories

Objective Category
Transit Operations and Management: Safety

Associated Objectives and Performance Measures

Objective	Performance Measure
Decrease the number of personal safety incidents by X percent within Y years.	Number of reported personal safety incidents.
Increase personal safety ratings by X percent within Y years.	Personal safety and customer service ratings.

Since the mapping between objectives and service packages is not always straight-forward and often situation-dependent, these mappings should only be used as a starting point. Users should do their own analysis to identify the best service packages for their region.

Needs and Requirements

Need		Functional Object	Requirement
01	Transit Vehicle Operators need to be aware of nearby pedestrians, including those who would like to board the transit vehicle in order to reduce the likelihood of pedestrian accidents with the transit vehicle.	Personal Pedestrian Safety	01	The personal information device shall provide the current location (latitude, longitude, and elevation) of the non-motorized travelers.
			03	The personal traveler interface shall provide traveler location information to transit vehicles.
			04	The personal traveler interface shall provide to a transit vehicle the traveler's intent to board the transit vehicle including the transit station/stop at which the traveler would like to board.
			05	The personal traveler interface shall provide the traveler with warnings about approaching vehicles.
			06	The personal traveler interface shall provide the traveler with an indication that an approaching transit vehicle is the one they want to board based on their input trip itinerary.
		Transit Vehicle On-Board Information Services	03	The transit vehicle shall support input and output forms that are suitable for travelers with physical disabilities.
		Transit Vehicle On-Board Information Services	06	The transit vehicle shall provide to the transit vehicle operator transit stop requests received from travelers or from the transit center.
		Transit Vehicle Pedestrian Safety	01	The transit vehicle shall determine if pedestrians are near a transit vehicle.
			02	The transit vehicle shall determine if pedestrians are at risk of crash due to proximity of transit vehicle.
			03	The transit vehicle shall notify the Transit Vehicle Operator of pedestrians that are in a position that is likely to result in a collision with the transit vehicle.
			04	The transit vehicle shall collect pedestrian presence information from equipped personal devices.
			05	The transit vehicle shall determine whether pedestrians are at transit stops.
			06	The transit vehicle shall notify the Transit Vehicle Operator of the presence of pedestrians at a transit stop near the transit vehicle.
02	Pedestrians need to know the proximity of a transit vehicle to a transit stop and whether the transit vehicle is the one they want to board (i.e., the correct route).	Personal Trip Planning and Route Guidance	06	The personal traveler interface shall allow a traveler to send a stop request to an approaching transit vehicle.
		Transit Vehicle On-Board Information Services	01	The transit vehicle shall enable traffic and travel advisory information to be requested and output to the traveler. Such information may include transit routes, schedules, transfer options, fares, real-time schedule adherence, current incidents, weather conditions, and special events.
			02	The transit vehicle shall broadcast advisories about the imminent arrival of the transit vehicle at the next station/stop via an on-board automated annunciation system.
			05	The transit vehicle shall tailor the output of the request traveler information based on the current location of the transit vehicle.
		Transit Vehicle Pedestrian Safety	07	The transit vehicle shall send vehicle identification information to nearby equipped personal devices.
			08	The transit vehicle shall determine when its position is near a transit station/stop.
			09	The transit vehicle shall send an indication to nearby equipped personal devices when its position is near a transit station/stop.
		Vehicle Basic Safety Communication	15	The vehicle shall provide its location to nearby traveler devices.

Related Sources

Document Name	Version	Publication Date
ConOps for Transit Connected Vehicle	Draft	3/31/2012

Security

In order to participate in this service package, each physical object should meet or exceed the following security levels.

Physical Object Security
Physical Object	Confidentiality	Integrity	Availability	Security Class
Basic Transit Vehicle
Personal Information Device	Moderate	High	Moderate	Class 3
Transit Vehicle OBE	Moderate	Moderate	Moderate	Class 2

In order to participate in this service package, each information flow triple should meet or exceed the following security levels.

Information Flow Security
Source	Destination	Information Flow	Confidentiality	Integrity	Availability
Source	Destination	Information Flow	Basis	Basis	Basis
Basic Transit Vehicle	Transit Vehicle OBE	host transit vehicle status	Moderate	Moderate	Moderate
Basic Transit Vehicle	Transit Vehicle OBE	host transit vehicle status	This can include some sensitive data. However, other data, such as vehicle location and motion will then be broadcast. There also may be proprietary information included in this. DISC THEA believes this to be LOW: "sensor data is not confidential; harm should not come from seeing status."	This is used later on to determine whether a vehicle should request priority at an intersection. If this information is incorrect the vehicle may make false requests. All other flows that use the data from this flow have a MODERATE integrity requirement, therefore, this must also have a MODERATE integrity requirement. DISC: THEA believes this should be HIGH: "sensor data needs to be accurate and should not be tampered with."	This information would need to be available immediately for the application to work.DISC: THEA believes this should be HIGH: "sensor data must be consistently available to feed BSMs broadcast at 10Hz, notifications, etc.."
Personal Information Device	Transit Vehicle OBE	personal location	Not Applicable	High	Moderate
Personal Information Device	Transit Vehicle OBE	personal location	This data is intentionally transmitted to everyone via a broadcast. It can also be determined via other visual indicators.	An incorrect location message could lead to a false warning or lack of warning. A lack of warning can have obvious catastrophic consequences, while a false warning could lead to users ignoring warnings due to perceived inaccuracy. Given that this triple may apply to highly dynamic environments (such as work zones), its accuracy is paramount, and thus if sent, must have HIGH integrity.	There are other visual indicators about the geofenced areas. PID users in dynamic environments (incident and work zones) should know when they are leaving a geofenced area. As long as they remain in the geofenced area, this information is not as necessary. Not all pedestrians will carry a personal information device, and the system should be able to operate without this information.
Personal Information Device	Transit Vehicle OBE	transit user information	Moderate	Moderate	Moderate
Personal Information Device	Transit Vehicle OBE	transit user information	May contain the PII of the originator, which should be readable only by the intended recepient lest the originator's privacy be violated. If the implementation does not provide traveler identity, this may be reduced to LOW.	If this is compromised or corrupted, the user's needs may not be properly communicated or met. If this is forged, the transit provider may provide unnecessary services.	If this is not available, the user may not receive transit services offered, and as with other transit services may ceases using the system. While the immediate impact is LOW, long term impact is MODERATE due to user confidence issues.
Personal Information Device	Traveler	traveler interface updates	Not Applicable	Moderate	Moderate
Personal Information Device	Traveler	traveler interface updates	Personalized data that includes directions and guidance for an individual, but eventually evident anyway.	Should be accurate as the Traveler will be relying on this information for routing and related choices. Lack of accuracy will result in lack of confidence from the traveler as well as an unsatisfactory trip, leading to a negative feedback spiral.	Users expect their devices to work. If information is not presented to the operator, the relevant applications simply won't be used.
Transit Vehicle OBE	Personal Information Device	transit vehicle information	Low	Moderate	Moderate
Transit Vehicle OBE	Personal Information Device	transit vehicle information	Data is intended for public use.	General transit schedule information, as well as more specific "next stop" and similar information should be prompt and correct or users will lose confidence and not use the system. Also inconvenienced by the lack of correct and timely information. Impact is localized and limited however, so MODERATE and not HIGH.	General transit schedule information, as well as more specific "next stop" and similar information should be prompt and correct or users will lose confidence and not use the system. Also inconvenienced by the lack of correct and timely information. Impact is localized and limited however, so MODERATE and not HIGH.
Transit Vehicle OBE	Transit Vehicle Operator	transit vehicle operator display	Low	Moderate	Low
Transit Vehicle OBE	Transit Vehicle Operator	transit vehicle operator display	This should not include any sensitive information. It would be possible for a person standing behind the driver to observe the information transmitted.	Some minimal guarantee of data integrity is necessary for all C-ITS flows. This entire application should not directly affect the drivers driving habits. The operator should still be slowing and stopping at yellow or red lights, along with observing all other driving regulations. DISC: Original V2I analysis classified this as LOW.	Even if the operator is not made aware of the signal preemption, the system should still operate correctly. The operator should be using the traffic lights to influence their decision about whether or not to stop, not the display.
Transit Vehicle Operator	Transit Vehicle OBE	transit vehicle operator input	Low	Moderate	Low
Transit Vehicle Operator	Transit Vehicle OBE	transit vehicle operator input	This information is transmitted through systems on board the Transit Vehicle. Even if the vehicle were compromised and these communications monitored, most of this information is directly observable.	Some minimal guarantee of data integrity is necessary for all C-ITS flows. If this is compromised, it could result in an incorrect signal priority request, which has minimal impact. DISC: Original V2I analysis classified this as LOW.	A delay in reporting this may result in a signal priority request not going through, which has minimal impact.
Traveler	Personal Information Device	traveler input	Not Applicable	Moderate	Low
Traveler	Personal Information Device	traveler input	This data is informing the vehicle of operational information that is relevant to the operation of the vehicle. It should not contain anything sensitive, and does not matter if another person can observe it.	While public, information must be correct or travelers may make incorrect decisions with regard to their travel plans.	Information is available through other means, though depending on the location this might not always be the case, in which case this would be MODERATE.

Standards

Currently, there are no standards associated with the physical objects in this service package. For standards related to interfaces, see the specific information flow triple pages.

System Requirements

System Requirement		Need
001	The system shall provide the current location (latitude, longitude, and elevation) of the non-motorized travelers.	01	Transit Vehicle Operators need to be aware of nearby pedestrians, including those who would like to board the transit vehicle in order to reduce the likelihood of pedestrian accidents with the transit vehicle.
002	The system shall provide traveler location information to transit vehicles.	01	Transit Vehicle Operators need to be aware of nearby pedestrians, including those who would like to board the transit vehicle in order to reduce the likelihood of pedestrian accidents with the transit vehicle.
003	The system shall provide to a transit vehicle the traveler's intent to board the transit vehicle including the transit station/stop at which the traveler would like to board.	01	Transit Vehicle Operators need to be aware of nearby pedestrians, including those who would like to board the transit vehicle in order to reduce the likelihood of pedestrian accidents with the transit vehicle.
004	The system shall provide the traveler with warnings about approaching vehicles.	01	Transit Vehicle Operators need to be aware of nearby pedestrians, including those who would like to board the transit vehicle in order to reduce the likelihood of pedestrian accidents with the transit vehicle.
005	The system shall provide the traveler with an indication that an approaching transit vehicle is the one they want to board based on their input trip itinerary.	01	Transit Vehicle Operators need to be aware of nearby pedestrians, including those who would like to board the transit vehicle in order to reduce the likelihood of pedestrian accidents with the transit vehicle.
006	The system shall allow a traveler to send a stop request to an approaching transit vehicle.	02	Pedestrians need to know the proximity of a transit vehicle to a transit stop and whether the transit vehicle is the one they want to board (i.e., the correct route).
007	The system shall enable traffic and travel advisory information to be requested and output to the traveler. Such information may include transit routes, schedules, transfer options, fares, real-time schedule adherence, current incidents, weather conditions, and special events.	02	Pedestrians need to know the proximity of a transit vehicle to a transit stop and whether the transit vehicle is the one they want to board (i.e., the correct route).
008	The system shall broadcast advisories about the imminent arrival of the transit vehicle at the next stop via an on-board automated annunciation system.	02	Pedestrians need to know the proximity of a transit vehicle to a transit stop and whether the transit vehicle is the one they want to board (i.e., the correct route).
009	The system shall support input and output forms that are suitable for travelers with physical disabilities.	01	Transit Vehicle Operators need to be aware of nearby pedestrians, including those who would like to board the transit vehicle in order to reduce the likelihood of pedestrian accidents with the transit vehicle.
010	The system shall tailor the output of the request traveler information based on the current location of the transit vehicle.	02	Pedestrians need to know the proximity of a transit vehicle to a transit stop and whether the transit vehicle is the one they want to board (i.e., the correct route).
011	The system shall provide to the transit vehicle operator transit stop requests received from travelers or from the transit center.	01	Transit Vehicle Operators need to be aware of nearby pedestrians, including those who would like to board the transit vehicle in order to reduce the likelihood of pedestrian accidents with the transit vehicle.
012	The system shall determine if pedestrians are near a transit vehicle.	01	Transit Vehicle Operators need to be aware of nearby pedestrians, including those who would like to board the transit vehicle in order to reduce the likelihood of pedestrian accidents with the transit vehicle.
013	The system shall determine if pedestrians are at risk of crash due to proximity of transit vehicle.	01	Transit Vehicle Operators need to be aware of nearby pedestrians, including those who would like to board the transit vehicle in order to reduce the likelihood of pedestrian accidents with the transit vehicle.
014	The system shall notify the Transit Vehicle Operator of pedestrians that are in a position that is likely to result in a collision with the transit vehicle.	01	Transit Vehicle Operators need to be aware of nearby pedestrians, including those who would like to board the transit vehicle in order to reduce the likelihood of pedestrian accidents with the transit vehicle.
015	The system shall collect pedestrian presence information from equipped personal devices.	01	Transit Vehicle Operators need to be aware of nearby pedestrians, including those who would like to board the transit vehicle in order to reduce the likelihood of pedestrian accidents with the transit vehicle.
016	The system shall determine whether pedestrians are at transit stops.	01	Transit Vehicle Operators need to be aware of nearby pedestrians, including those who would like to board the transit vehicle in order to reduce the likelihood of pedestrian accidents with the transit vehicle.
017	The system shall notify the Transit Vehicle Operator of the presence of pedestrians at a transit stop near to the transit vehicle.	01	Transit Vehicle Operators need to be aware of nearby pedestrians, including those who would like to board the transit vehicle in order to reduce the likelihood of pedestrian accidents with the transit vehicle.
018	The system shall send vehicle identification information to nearby equipped personal devices.	02	Pedestrians need to know the proximity of a transit vehicle to a transit stop and whether the transit vehicle is the one they want to board (i.e., the correct route).
019	The system shall determine when its position is near a transit station/stop.	02	Pedestrians need to know the proximity of a transit vehicle to a transit stop and whether the transit vehicle is the one they want to board (i.e., the correct route).
020	The system shall send an indication to nearby equipped personal devices when its position is near a transit station/stop.	02	Pedestrians need to know the proximity of a transit vehicle to a transit stop and whether the transit vehicle is the one they want to board (i.e., the correct route).
021	The system shall provide its location to nearby traveler devices.	02	Pedestrians need to know the proximity of a transit vehicle to a transit stop and whether the transit vehicle is the one they want to board (i.e., the correct route).