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PT14: Multi-modal Coordination

This service package establishes two way communications between multiple transit and traffic agencies to improve service coordination. Multimodal coordination between transit agencies can increase traveler convenience at transit transfer points and clusters (a collection of stops, stations, or terminals where transfers can be made conveniently) and also improve operating efficiency.

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

Enterprise

Development Stage Roles and Relationships

Installation Stage Roles and Relationships

Operations Stage Roles and Relationships
(hide)

Source Destination Role/Relationship
Alternate Mode Transportation Center Manager Alternate Mode Transportation Center Manages
Alternate Mode Transportation Center Owner Alternate Mode Transportation Center Owns
Alternate Mode Transportation Center Owner Alternate Mode Transportation Center Manager Operations Agreement
Alternate Mode Transportation Center Owner Traffic Management Center Owner Information Provision Agreement
Alternate Mode Transportation Center Owner Transit Management Center Owner Information Exchange Agreement
Alternate Mode Transportation Center Supplier Alternate Mode Transportation Center Owner Warranty
Event Promoter System Manager Event Promoter System Manages
Event Promoter System Owner Event Promoter System Owns
Event Promoter System Owner Event Promoter System Manager Operations Agreement
Event Promoter System Owner Transit Management Center Owner Information Exchange Agreement
Event Promoter System Supplier Event Promoter System Owner Warranty
Other Transit Management Centers Manager Other Transit Management Centers Manages
Other Transit Management Centers Owner Other Transit Management Centers Owns
Other Transit Management Centers Owner Other Transit Management Centers Manager Operations Agreement
Other Transit Management Centers Owner Transit Management Center Owner Information Exchange Agreement
Other Transit Management Centers Supplier Other Transit Management Centers Owner Warranty
Parking Management Center Manager Parking Management Center Manages
Parking Management Center Owner Parking Management Center Owns
Parking Management Center Owner Parking Management Center Manager Operations Agreement
Parking Management Center Owner Transit Management Center Owner Information Provision Agreement
Parking Management Center Supplier Parking Management Center Owner Warranty
Traffic Management Center Manager Traffic Management Center Manages
Traffic Management Center Owner Traffic Management Center Owns
Traffic Management Center Owner Traffic Management Center Manager Operations Agreement
Traffic Management Center Supplier Traffic Management Center Owner Warranty
Transit Management Center Manager Transit Management Center Manages
Transit Management Center Manager Transit Operations Personnel System Usage Agreement
Transit Management Center Owner Alternate Mode Transportation Center Owner Information Exchange Agreement
Transit Management Center Owner Event Promoter System Owner Information Exchange Agreement
Transit Management Center Owner Other Transit Management Centers Owner Information Exchange Agreement
Transit Management Center Owner Traffic Management Center Owner Information Provision Agreement
Transit Management Center Owner Transit Management Center Owns
Transit Management Center Owner Transit Management Center Manager Operations Agreement
Transit Management Center Owner Transit Vehicle OBE Owner Information Exchange Agreement
Transit Management Center Supplier Transit Management Center Owner Warranty
Transit Operations Personnel Transit Management Center Operates
Transit Vehicle OBE Manager Transit Vehicle OBE Manages
Transit Vehicle OBE Owner Transit Management Center Owner Information Exchange Agreement
Transit Vehicle OBE Owner Transit Vehicle OBE Owns
Transit Vehicle OBE Owner Transit Vehicle OBE Manager Operations Agreement
Transit Vehicle OBE Supplier Transit Vehicle OBE Owner Warranty

Maintenance Stage Roles and Relationships

Physical

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Includes Physical Objects:

Physical Object Class Description
Alternate Mode Transportation Center Center The 'Alternate Mode Transportation Center' provides the interface through which non-ITS transportation systems (e.g., airlines, ferry services, passenger-carrying heavy rail) can exchange data with ITS. This two-way interface enables coordination for efficient movement of people across multiple transportation modes. It also enables the traveler to efficiently plan itineraries which include segments using other modes.
Event Promoter System Center 'Event Promoter System' represents Special Event Sponsors that have knowledge of events that may impact travel on roadways or other modal means. Examples of special event sponsors include sporting events, conventions, motorcades/parades, and public/political events. These promoters interface to the ITS to provide event information such as date, time, estimated duration, location, and any other information pertinent to traffic movement in the surrounding area.
Other Transit Management Centers Center Representing another transit operations center, 'Other Transit Management Centers' is intended to provide a source and destination for information flows between peer transit management centers. It enables transit management activities to be coordinated across geographic boundaries or jurisdictions.
Parking Management Center Center The 'Parking Management Center' manages one or more parking lots by providing configuration and control of field infrastructure, user account management and interfaces with financial systems to manage payment. This p-object takes the back office portion of the Parking Management System's functionality as it was defined in ARC-IT 8.3 and prior.
Traffic Management Center Center The 'Traffic Management Center' monitors and controls traffic and the road network. It represents centers that manage a broad range of transportation facilities including freeway systems, rural and suburban highway systems, and urban and suburban traffic control systems. It communicates with ITS Roadway Equipment and Connected Vehicle Roadside Equipment (RSE) to monitor and manage traffic flow and monitor the condition of the roadway, surrounding environmental conditions, and field equipment status. It manages traffic and transportation resources to support allied agencies in responding to, and recovering from, incidents ranging from minor traffic incidents through major disasters.
Transit Management Center Center The 'Transit Management Center' manages transit vehicle fleets and coordinates with other modes and transportation services. It provides operations, maintenance, customer information, planning and management functions for the transit property. It spans distinct central dispatch and garage management systems and supports the spectrum of fixed route, flexible route, paratransit services, transit rail, and bus rapid transit (BRT) service. The physical object's interfaces support communication between transit departments and with other operating entities such as emergency response services and traffic management systems.
Transit Operations Personnel Center 'Transit Operations Personnel' represents the people that are responsible for fleet management, maintenance operations, and scheduling activities of the transit system. These different roles represent a variety of individuals in the transit industry. Within the transit industry the person responsible for fleet management is known by many names: Street Supervisor, Starter, Dispatcher, Supervisor, Traffic Controller, Transportation Coordinator. This person actively monitors, controls, and modifies the transit fleet routes and schedules on a day to day basis (dynamic scheduling). The modifications will take account of abnormal situations such as vehicle breakdown, vehicle delay, detours around work zones or incidents (detour management, connection protection, and service restoration), and other causes of route or schedule deviations. Transit operations personnel are also responsible for demand responsive transit operation and for managing emergency situations within the transit network such as silent alarms on board transit vehicles, or the remote disabling of the vehicle. In addition the Transit Operations Personnel may be responsible for assigning vehicle operators to routes, checking vehicle operators in and out, and managing transit stop issues. This object also represents the personnel in the transit garage that are responsible for maintenance of the transit fleets, including monitoring vehicle status, matching vehicles with operators, and maintenance checking of transit vehicles. Finally, it represents the people responsible for planning, development, and management of transit routes and schedules.
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.

Includes Functional Objects:

Functional Object Description Physical Object
TMC Multi-Modal Coordination 'TMC Multi-Modal Coordination' supports center-to-center coordination between the Traffic Management and Transit Management Centers. It monitors transit operations and provides traffic signal priority for transit vehicles on request from the Transit Management Center. Traffic Management Center
Transit Center Multi-Modal Coordination 'Transit Center Multi-Modal Coordination' supports transit service coordination between transit properties and coordinates with other surface and air transportation modes. As part of service coordination, it shares schedule and trip information, as well as transit transfer cluster (a collection of stop points, stations, or terminals where transfers can be made conveniently) and transfer point information between Multimodal Transportation Service Providers, Transit Agencies, and ISPs. An interface to Traffic Management also supports demand management strategies. Transit Management Center
Transit Vehicle Schedule Management 'Transit Vehicle Schedule Management' monitors schedule performance and identifies corrective actions when a deviation is detected. It provides two-way communication between the transit vehicle and center, enabling the center to communicate with the vehicle operator and monitor on-board systems. Transit Vehicle OBE

Includes Information Flows:

Information Flow Description
alternate mode information Schedule information for alternate mode transportation providers such as air, ferry, and passenger-carrying heavy rail. This also includes details of incidents and other service disruptions that have occurred in the alternative mode. This also includes measures of service demand that supports assessment of their impact on the road network.
alternate mode service coordination Coordination of service changes to support service coordination between a transit service and an alternate mode (e.g., rail, ferry, air).
alternate mode service data Detailed real-time schedule and other service information from alternate modes that supports coordination between modes to facilitate efficient transfer at connection points.
event plans Plans for major events possibly impacting traffic.
event transit service plans Transit service plans to support the special event. This may include additional runs, tighter headways, stop changes, and other changes to standard operations to accommodate the special event.
parking information General parking information and status, including current parking availability, parking pricing, and parking space availability information.
service information request Request to multimodal (possibly non-roadway) transit provider for general services information and specific trip information or reservation.
service information response Multimodal (possibly non-roadway) transit provider services information and trip reservation confirmations.
transit alternate mode information Transit schedule information provided for coordination at transit interchange points with alternate modes.
transit operations personnel input User input from transit operations personnel including instructions governing service availability, schedules, emergency response plans, transit personnel assignments, transit maintenance requirements, and other inputs that establish general system operating requirements and procedures.
transit operations status Presentation of information to transit operations personnel including accumulated schedule and fare information, ridership and on-time performance information, emergency response plans, transit personnel information, maintenance records, and other information intended to support overall planning and management of a transit property.
transit schedule information Current and projected transit schedule information used to initialize the transit vehicle with a vehicle assignment, monitor schedule performance, and develop corrective actions on-board.
transit service coordination Schedule coordination or AVL information shared between local/regional transit organizations. This includes coordination of connections and control parameters between transit properties as well as coordination of transit-related maintenance activities.
transit system data Current transit system operations information indicating current transit routes and fares, the level of service on each route, and the progress of individual vehicles along their routes for use in forecasting demand and estimating current transportation network performance.
transit vehicle schedule performance Estimated times of arrival and anticipated schedule deviations reported by a transit vehicle.

Goals and Objectives

Associated Planning Factors and Goals

Planning Factor Goal
A. Support the economic vitality of the metropolitan area, especially by enabling global competitiveness, productivity, and efficiency; Improve the national freight network, strengthen the ability of rural communities to access national and international trade markets, and support regional economic development
D. Increase the accessibility and mobility of people and for freight; Achieve a significant reduction in congestion
E. Protect and enhance the environment, promote energy conservation, improve the quality of life, and promote consistency between transportation improvements and State and local planned growth and economic development patterns; Enhance the performance of the transportation system while protecting and enhancing the natural environment
F. Enhance the integration and connectivity of the transportation system, across and between modes, for people and freight; Enhance the integration and connectivity of the transportation system
G. Promote efficient system management and operation; Improve the efficiency of the surface transportation system
I. Improve the resiliency and reliability of the transportation system and reduce or mitigate stormwater impacts of surface transportation; Improve the resiliency and reliability of the surface transportation system
J. Enhance travel and tourism. Develop a transportation system that supports travel and tourism

Associated Objective Categories

Objective Category
Integration: Connectivity
Special Event Management: Entry/Exit Travel Times
Special Event Management: Mode Shift from SOV
System Efficiency: Delay
System Efficiency: Intensity of Congestion (Travel Time Index)
System Efficiency: Travel Time
System Efficiency: Trip Connectivity
System Efficiency: Vehicle Miles Traveled
System Options: Modal Options for Individuals with Disabilities
System Options: Mode Share
System Options: Transit Use
System Options: Travel Time - Transit Compared to Auto
System Reliability: Non-Recurring Delay
Transit Operations and Management: Park-and-Ride Support
Transit Operations and Management: Service Directness

Associated Objectives and Performance Measures

Objective Performance Measure
Achieve X percent alternative (non-SOV) mode share in transit station communities (or other destinations) by year Y. Percent of all trips made using alternative modes in transit station communities.
Annual rate of change in regional average commute travel time will not exceed regional rate of population growth through the year Y. Average commute trip travel time (minutes).
At least X percent of trips can be made with no more than Y transfers. Percent of trips with no more than Y transfers.
Decrease the percent of special event attendees traveling to the event in single-occupancy vehicles by X percent in Y years. Percent of special event attendees using single-occupancy vehicles each year for selected events.
Improve average transit travel time compared to auto in major corridors by X minutes per year for Y years. Transit to auto travel time differential for a given period (daily, hourly, or peak hours), on a given portion of the system (system wide, by facility type, or by corridor).
Improve average travel time during peak periods by X percent by year Y. Average travel time during peak periods (minutes).
Increase active (bicycle/pedestrian) mode share by X percent by year Y. Share of trips by each mode of travel.
Increase alternative (non-SOV) mode share for all trips by X percent within the next Y years. Share of trips by each mode of travel.
Increase average transit load factor by X percent by year Y. Number of riders on various transit units per trip at peak travel times.
Increase passenger miles traveled per capita on transit by X percent by year Y. Number of passenger miles traveled per capita.
Increase the availability of transit to individuals with disabilities by X percent by year Y. The percent of individuals with disabilities that can access transit.
Increase the percent of special event attendees using park & ride lots by X percent in Y years. Percent of special event attendees utilizing park & ride lots each year for selected events.
Increase the percent of special events with dedicated shuttle service by X percent in Y years. Percent of special events with dedicated shuttle service for selected events during a 1-year period.
Increase transit mode share by X percent by year Y during peak periods. Percent of all peak-period trips made by transit.
Increase transit mode share by X percent by year Y. Percent of all trips made by transit.
Increase traveler awareness of park-and-ride lots by X percent within Y years. Number of users aware of park-and-ride lots in their region.
Maintain a travel time differential between transit and auto during peak periods of X percent for Y years. Transit to auto travel time differential for a given period (daily, hourly, or peak hours), on a given portion of the system (system wide, by facility type, or by corridor).
Reduce average travel time into and out of the event by X percent in Y years. Average travel time away from selected special events to a set of locations over a year.
Reduce average travel time into and out of the event by X percent in Y years. Average travel time to selected special events from a set of locations in the area over a year.
Reduce buffer time index for travelers to multiple similar special events by X percent in Y years. Buffer time index for travelers to multiple similar special events.
Reduce cost of transfer fees paid by X percent by year Y. Average cost of transfers.
Reduce door-to-door trip time by X percent by year Y. Average door-to-door trip time.
Reduce excess fuel consumed due to congestion by X percent by year Y. Excess fuel consumed (total or per capita).
Reduce hours of delay per capita by X percent by year Y. Hours of delay (person-hours).
Reduce hours of delay per capita by X percent by year Y. Hours of delay per capita.
Reduce non-special event VMT in the event area during events by X percent in Y years. Non-special event VMT in the event area during events over a year.
Reduce per capita SOV commute trip rate by X percent in Y years. SOV commute trips per capita.
Reduce the regional average travel time index by X percent per year. Travel time index (the average travel time during the peak period, using congested speeds, divided by the off-peak period travel time, using posted or free-flow speeds).
Reduce the travel time differential between transit and auto during peak periods by X percent per year for Y years. Transit to auto travel time differential for a given period (daily, hourly, or peak hours), on a given portion of the system (system wide, by facility type, or by corridor).
Reduce total energy consumption per capita for transportation by X percent by year Y. Total energy consumed per capita for transportation.
Reduce total fuel consumption per capita for transportation by X percent by year Y. Total fuel consumed per capita for transportation.
Reduce total person hours of delay (or travel-time delay per capita) by time period (peak, off-peak) caused by all transient events such as traffic incidents, special events, and work zones. Total person hours of delay during scheduled and/or unscheduled disruptions to travel.
Reduce total person hours of delay (or travel-time delay per capita) by time period (peak, off-peak) caused by scheduled events, work zones, or system maintenance by x hours in y years. Travel time delay during scheduled and/or unscheduled disruptions to travel.
Reduce total person hours of delay (or travel-time delay per capita) by time period (peak, off-peak) caused by unscheduled disruptions to travel. Total person hours of delay during scheduled and/or unscheduled disruptions to travel.
Reduce vehicle miles traveled per capita by X percent by year Y. Average VMT per capita per day, per week, or per year.
Scheduled transfer times between routes should be no longer than X minutes. Scheduled transfer times between routes.


 
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 Operations needs to be able to coordinate service information with other Transit Operations in order to improve operations. Transit Center Multi-Modal Coordination 02 The center shall share transfer cluster and transfer point information with other transit centers. A transfer cluster is a collection of stop points, stations, or terminals where transfers can be made conveniently.
04 The center shall coordinate schedules and services with other transit centers.
06 The center shall provide transit operations personnel with the capability to control and monitor transit service coordination activities.
Transit Vehicle Schedule Management 01 The transit vehicle shall receive a vehicle assignment including transit route information, transit service instructions, traffic information, road conditions, and other information for the operator.
02 The transit vehicle shall use the route information and its current location to determine the deviation from the predetermined schedule.
03 The transit vehicle shall calculate the estimated times of arrival (ETA) at transit stops.
04 The transit vehicle shall determine scenarios to correct the schedule deviation.
06 The transit vehicle shall send the schedule deviation and estimated arrival time information to the center.
07 The transit vehicle shall support the operations of a flexible route service. This may include requests for route deviations that would then lead to schedule corrective actions.
02 Transit Operations needs to be able to coordinate with other transportation modes (e.g. ferry operations, airports) in order to improve service connections with these other modes. TMC Multi-Modal Coordination 02 The center shall exchange information with transit management centers including details current transit routes, the level of service on each route, and the progress of individual vehicles along their routes.
Transit Center Multi-Modal Coordination 05 The center shall coordinate schedules and services with other surface or air transportation modes.
Transit Vehicle Schedule Management 01 The transit vehicle shall receive a vehicle assignment including transit route information, transit service instructions, traffic information, road conditions, and other information for the operator.
02 The transit vehicle shall use the route information and its current location to determine the deviation from the predetermined schedule.
03 The transit vehicle shall calculate the estimated times of arrival (ETA) at transit stops.
04 The transit vehicle shall determine scenarios to correct the schedule deviation.
06 The transit vehicle shall send the schedule deviation and estimated arrival time information to the center.
07 The transit vehicle shall support the operations of a flexible route service. This may include requests for route deviations that would then lead to schedule corrective actions.
03 Transit Operations needs to coordinate with other centers (e.g. traffic, parking, and event promoters) in order to share system information. Transit Center Multi-Modal Coordination 01 The center shall coordinate schedules and services with traffic management, parking management, and event planning systems.

Related Sources

Document Name Version Publication Date
ITS User Services Document 1/1/2005


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
Alternate Mode Transportation Center Moderate Moderate Moderate Class 2
Event Promoter System Moderate High Moderate Class 3
Other Transit Management Centers Moderate Moderate Moderate Class 2
Parking Management Center Moderate Moderate Moderate Class 2
Traffic Management Center Low Low Low Class 1
Transit Management Center Moderate Moderate Moderate Class 2
Transit Vehicle OBE Low Moderate Moderate Class 1



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
Basis Basis Basis
Alternate Mode Transportation Center Traffic Management Center alternate mode information Low Moderate Low
Should not contain any personal or confidential information. Generally transportation coordination information should be correct between source and destination, or inappropriate actions may be taken. While useful, there is little impact if this flow is not available.
Alternate Mode Transportation Center Transit Management Center alternate mode service coordination Low Moderate Moderate
Should not contain any personal or confidential information. Generally transportation coordination information should be correct between source and destination, or inappropriate actions may be taken. While useful, there is little impact if this flow is not available.
Alternate Mode Transportation Center Transit Management Center alternate mode service data Moderate Moderate Low
Information related to liaison between entities could have personal and contact information, so should not generally be readable. If no contact information is included Confidentiality would be LOW. Coordination-related information needs to be correct, or route calculation and coordinations will suffer. The impact will not be catastrophic but could be significant. This information is unlikely to change very quickly. Loss of this flow will have minimal impact, as organizations fall back to default operating procedures, assuming some initial coordination has taken place.
Alternate Mode Transportation Center Transit Management Center service information response Moderate Moderate Moderate
The individual service response may include PII, so its reveal may compromise the individual using the transportation service. Data integrity needs to be preserved so that incorrect decisions are not made with regard to procuring transit services. Given that this flow is in response to real-time needs, a prompt response is justified. Lack of response may lead to the a transit user making alternate arrangements, which leads to an overall
Event Promoter System Transit Management Center event plans Moderate High Moderate
This will include PII of the event contact person, which should be protected from casual viewing. This flow will also include details of the planned event, which in some circumstances might not be entire public information and so again, should not be casually viewable. Personal contact information needs to be correct, but so do the details of the planned event because of the potential severity of the event's impact. Generally the more significant the potential impact of the event, the higher this should be, but never below MODERATE. There should be other mechanisms for getting this information, otherwise it would match integrity.
Other Transit Management Centers Transit Management Center transit service coordination Moderate Moderate Moderate
Coordination between transit systems is generally not sensitive, however this flow may include information related to serving individual connection protection requests that are sensitive. If this information is not timely or correct, transit agencies may not properly coordinate, leaving some users unserved. If this information is not timely or correct, transit agencies may not properly coordinate, leaving some users unserved.
Parking Management Center Transit Management Center parking information Moderate Moderate Moderate
Does not include PII, but does include usage information for a managed facility that implies a number of vehicles. While this is observable information, it could be considered competitive, and regardless is accessible without being physically present, which is its own barrier. Generally transportation coordination information should be correct between source and destination, or inappropriate actions may be taken. Most likely not a frequently updated flow. Typically MODERATE for applications with a high degree of commercial vehicle parking, but could be LOW otherwise.
Transit Management Center Alternate Mode Transportation Center alternate mode service coordination Low Moderate Low
Should not contain any personal or confidential information. Generally transportation coordination information should be correct between source and destination, or inappropriate actions may be taken. While useful, there is little impact if this flow is not available.
Transit Management Center Alternate Mode Transportation Center service information request Moderate Moderate Moderate
Individual service response implies activity by an individual, which could be PII. Coordination information between transit agencies needs to be correct, or trip errors (improper dispatch, lack of service) may occur. Some dynamism in this flow, depending on the level of interactivity and coordination, this might be Low.
Transit Management Center Alternate Mode Transportation Center transit alternate mode information Low Moderate Moderate
Coordination information between transit agencies, if compromised, has no obvious impact. Coordination information between transit agencies needs to be correct, or trip errors (improper dispatch, lack of service) may occur. Some dynamism in this flow, depending on the level of interactivity and coordination, this might be Low.
Transit Management Center Event Promoter System event transit service plans Moderate Moderate Moderate
Information includes changes to standing bus routes and related transit routing modifications, that a criminal or other hostile 3rd party might use against the transit vehicle/riders. Information must be accurate so the event promotor plans can proceed as desired. Might be LOW if transit plans are trivial or not counted on. Flow will probably not be used often, but when it is in place will have to be operable to support special events.
Transit Management Center Other Transit Management Centers transit service coordination Moderate Moderate Moderate
Coordination between transit systems is generally not sensitive, however this flow may include information related to serving individual connection protection requests that are sensitive. If this information is not timely or correct, transit agencies may not properly coordinate, leaving some users unserved. If this information is not timely or correct, transit agencies may not properly coordinate, leaving some users unserved.
Transit Management Center Traffic Management Center transit system data Low Moderate Low
Coordination information between transit and traffic agencies, if compromised, has no obvious impact. Coordination information between transit and traffic agencies needs to be correct, or trip errors (improper dispatch, lack of service) may occur. Some dynamism in this flow, depending on the level of interactivity and coordination, this might be Low.
Transit Management Center Transit Operations Personnel transit operations status Moderate High High
Backoffice operations flows should have minimal protection from casual viewing, as otherwise imposters could gain illicit control or information that should not be generally available. Backoffice operations flows should generally be correct and available as these are the primary interface between operators and system. Backoffice operations flows should generally be correct and available as these are the primary interface between operators and system.
Transit Management Center Transit Vehicle OBE transit schedule information Low Moderate Moderate
This information is not sensitive. It is generally made public, to support transit system functionality. This data contains the vehicle assignment. It should be accurate, and not easily modified. However, the bus drivers will have some knowledge about what a reasonable configuration is, and should be able to notice any unusual configurations, such as all busses being a #27. This information is necessary for the TSP to work correctly. A few missed messages will not have a large impact. The Transit Management Center needs to know if the TV OBE does not receive the message, so it can resend it.
Transit Operations Personnel Transit Management Center transit operations personnel input Moderate High High
Backoffice operations flows should have minimal protection from casual viewing, as otherwise imposters could gain illicit control or information that should not be generally available. Backoffice operations flows should generally be correct and available as these are the primary interface between operators and system. Backoffice operations flows should generally be correct and available as these are the primary interface between operators and system.
Transit Vehicle OBE Transit Management Center transit vehicle schedule performance Low Moderate Low
This information is directly observable, and in most instances it is made publically available. This information may be used to influence the decision about whether or not to make a traffic control priority request on behalf of the transit vehicle. If it is incorrect it may cause the transit management center to send out incorrect traffic control priority requests, which may delay traffic. There should not be any catastrophic failures caused if this data is occasionally missing.

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.