This subsystem collects, processes, stores, and disseminates transportation information to system operators and the traveling public. The subsystem can play several different roles in an integrated ITS. In one role, the ISP provides a data collection, fusing, and repackaging function, collecting information from transportation system operators and redistributing this information to other system operators in the region and other ISPs. In this information redistribution role, the ISP provides a bridge between the various transportation systems that produce the information and the other ISPs and their subscribers that use the information. The second role of an ISP is focused on delivery of traveller information to subscribers and the public at large. Information provided includes basic advisories, traffic and road conditions, transit schedule information, business directory information, ridematching information, parking information and weather information. The subsystem also provides the capability to provide specific directions to travellers by receiving origin and destination requests from travellers, generating route plans, and returning the calculated plans to the users. In addition to general route planning for travellers, the ISP also supports specialized route planning for vehicle fleets. In this third role, the ISP function may be dedicated to, or even embedded within, the dispatch system. Reservation services are also provided in advanced implementations. The information is provided to the traveller through the Personal Information Access Subsystem, Remote Traveller Support Subsystem, and the Vehicle Subsystem through available communications links. Both basic one-way (broadcast) and personalized two-way information provision are supported. The ISP is most commonly implemented as an Internet web site, but it represents any traveller information distribution service including systems that broadcast digital transportation data (e.g., satellite radio networks) and systems that support distribution through dedicated short range communications networks. The ISP accomplishes these roles using constantly evolving technologies like the Internet (World Wide Web pages), direct broadcast communications (email alerts, pagers, satellite radio network data broadcasts), communications through dedicated short range communications networks, etc.
Security Considerations
The Information Service Provider security considerations are related to the sensitivity of the requests being made for information as well as the sensitivity of the information being provided. Some ISPs may charge their clients for information and services, in which case security measures should be in place to protect the client's personal information including their credit information as well as unauthorized access to premium services. Information such as evacuation information and emergency alerts can jeopardize public safety if the information is unauthorized, inaccurate, or not delivered in a timely fashion. Traveller information that contains financial data or other highly sensitive information should have a relatively high degree of confidentiality in order to safeguard the information. In addition, it is important that traveller information is available in times of crisis. The integrity of the information is also important to prevent deceptive practices. Most traveller information will not require this level of safeguarding.
Functionality: Equipment Packages and PSpecs
Inputs/Outputs: Architecture Flows and Data Flows
- archive requests - A request to a data source for information on available data (i.e. "catalog") or a request that defines the data to be archived. The request can be a general subscription intended to initiate a continuous or regular data stream or a specific request intended to initiate a one-time response from the recipient.
Data Flows:
- archive status - Notification that data provided to an archive contains erroneous, missing, or suspicious data or verification that the data provided appears valid. If an error has been detected, the offending data and the nature of the potential problem are identified.
Data Flows:
- border traveller information - Traveller information relevant to border crossings such as queue times, transit times, wait times, and weather. This flow may include forecasts of border delays as well as current conditions.
Data Flows:
- travel service information - Information supplied by a service provider (e.g., a hotel or restaurant) that identifies the service provider and provides details of the service offering. This flow covers initial registration of a service provider and subsequent submittal of new information and status updates so that data currency is maintained.
Data Flows:
- travel service reservations - Traveller service (e.g., for a hotel or restaurant) reservation information and status, including information on associated billing transactions, when applicable.
Data Flows:
Care Facility > Information Service Provider
- care facility status - Information regarding facility type and capabilities, facility status, and its ability to admit new patients.
Data Flows:
- route restrictions - Information about routes, road segments, and areas that do not allow the transport of security sensitive hazmat cargoes or include other restrictions (such as height or weight limits).
Data Flows:
- alert notification - Notification of a major emergency such as a natural or man-made disaster, civil emergency, or child abduction for distribution to the public. The flow identifies the alert originator, the nature of the emergency, the geographic area affected by the emergency, the effective time period, and information and instructions necessary for the public to respond to the alert. This flow may also identify specific information that should not be released to the public.
Data Flows:
- evacuation information - Evacuation instructions and information including evacuation zones, evacuation times, and reentry times.
Data Flows:
- incident information - Notification of existence of incident and expected severity, location, time and nature of incident. As additional information is gathered and the incident evolves, updated incident information is provided. Incidents include any event that impacts transportation system operation ranging from routine incidents (e.g., disabled vehicle at the side of the road) through large-scale natural or human-caused disasters that involve loss of life, injuries, extensive property damage, and multi-jurisdictional response. This also includes special events, closures, and other planned events that may impact the transportation system.
Data Flows:
- shelter information - Evacuation shelter information including location, hours of operation, special accommodations, and current vacancy/availability information.
Data Flows:
- transportation system status - Current status and condition of transportation infrastructure (e.g., tunnels, bridges, interchanges, TMC offices, maintenance facilities). In case of disaster or major incident, this flow provides an assessment of damage sustained by the surface transportation system including location and extent of the damage, estimate of remaining capacity and necessary restrictions, and time frame for repair and recovery.
Data Flows:
- air quality information - Aggregated region-wide measured air quality data and possible pollution incident information.
Data Flows:
Event Promoters > Information Service Provider
- event information - Special event information for travellers. This would include a broader array of information than the similar "event plans" that conveys only information necessary to support traffic management for the event.
Data Flows:
- transaction status - Response to transaction request. Normally dealing with a request for payment.
Data Flows:
- route request - Request for a tailored route based on given constraints.
Data Flows:
- toll data request - Request made to obtain toll schedule information or pay a toll in advance. The request can be a subscription that initiates as-needed information updates as well as a one-time request for information.
Data Flows:
- traveller archive data - Data associated with traveller information services including service requests, facility usage, rideshare, routing, and traveller payment transaction data. Content may include a catalog of available information, the actual information to be archived, and associated meta data that describes the archived information.
Data Flows:
- travel service information request - Requests for travel service information. This flow supports initial registration of service providers and requests for additional traveller service information from registered providers.
Data Flows:
- travel service reservation request - Reservation request for traveller services (e.g. for a hotel or restaurant) including billing information when applicable.
Data Flows:
- alert status - Information indicating the current status of the emergency alert including identification of the traveller and driver information systems that are being used to provide the alert.
Data Flows:
- transportation information for operations - Information on the state of transportation system operations including traffic and road conditions, advisories, incidents, transit service information, weather information, parking information, and other related data.
Data Flows:
Information Service Provider > Event Promoters
- payment request - Request for payment from financial institution.
Data Flows:
- incident information - Notification of existence of incident and expected severity, location, time and nature of incident. As additional information is gathered and the incident evolves, updated incident information is provided. Incidents include any event that impacts transportation system operation ranging from routine incidents (e.g., disabled vehicle at the side of the road) through large-scale natural or human-caused disasters that involve loss of life, injuries, extensive property damage, and multi-jurisdictional response. This also includes special events, closures, and other planned events that may impact the transportation system.
Data Flows:
- road network conditions - Current and forecasted traffic information, road and weather conditions, and other road network status. Either raw data, processed data, or some combination of both may be provided by this architecture flow. Information on diversions and alternate routes, closures, and special traffic restrictions (lane/shoulder use, weight restrictions, width restrictions, HOV requirements) in effect is included along with a definition of the links, nodes, and routes that make up the road network.
Data Flows:
- route plan - Tailored route provided by ISP in response to a specific request.
Data Flows:
- toll data - Current toll schedules for different types of vehicles as well as advanced toll payment information.
Data Flows:
Information Service Provider > ISP Operator
- ISP operations information presentation - Presentation of information to the ISP Operator including current operational status, parameters for broadcast information settings, route selection controls, and travel optimization algorithms.
Data Flows:
- field equipment status - Identification of field equipment requiring repair and known information about the associated faults.
Data Flows:
- road network environmental probe data - Aggregated vehicle probe information that can be used to estimate current environmental conditions. Collected information would include measured air temperature, exterior light status, wiper status, sun sensor status, rain sensor status, traction control status, ALB status, and other collected vehicle system status and sensor information.
Data Flows:
- transportation information for operations - Information on the state of transportation system operations including traffic and road conditions, advisories, incidents, transit service information, weather information, parking information, and other related data.
Data Flows:
- map update request - Request for a map update which could include a new underlying map or map layer updates.
Data Flows:
Information Service Provider > Media
- traveller information for media - General traveller information regarding incidents, unusual traffic conditions, transit issues, or other advisory information that has been desensitized and provided to the media.
Data Flows:
- road network environmental probe data - Aggregated vehicle probe information that can be used to estimate current environmental conditions. Collected information would include measured air temperature, exterior light status, wiper status, sun sensor status, rain sensor status, traction control status, ALB status, and other collected vehicle system status and sensor information.
Data Flows:
- transportation weather information request - A request for transportation weather information that may specify the area of interest (a geographic region, particular routes within a region, specific road segments), the type of information that is required, the desired spatial resolution of the information, and time horizon.
Data Flows:
- road network environmental probe data - Aggregated vehicle probe information that can be used to estimate current environmental conditions. Collected information would include measured air temperature, exterior light status, wiper status, sun sensor status, rain sensor status, traction control status, ALB status, and other collected vehicle system status and sensor information.
Data Flows:
Information Service Provider > Other ISP
- ISP coordination - Coordination and exchange of transportation information between centres. This flow allows a broad range of transportation information collected by one ISP to be redistributed to many other ISPs and their clients.
Data Flows:
- parking lot data request - Request for parking lot occupancy, fares, and availability. The request can be a subscription that initiates as-needed information updates as well as a one-time request for information.
Data Flows:
- parking reservations request - Reservation request for parking lot.
Data Flows:
- broadcast traveller information - General traveller information that contains traffic and road conditions, link travel times, incidents, advisories, restrictions, transit service information, weather information, parking information, and other related traveller information.
Data Flows:
- business directory information - Travel service information and reservations for tourist attractions, lodging, dining, service stations, emergency services, and other services and businesses of interest to the traveller.
Data Flows:
- emergency traveller information - Public notification of an emergency such as a natural or man-made disaster, civil emergency, or child abduction. This flow also includes evacuation information including evacuation instructions, evacuation zones, recommended evacuation times, tailored evacuation routes and destinations, traffic and road conditions along the evacuation routes, traveller services and shelter information, and reentry times and instructions.
Data Flows:
- interactive traveller information - Traveller information provided in response to a traveller request. The provided information includes traffic and road conditions, advisories, incidents, payment information, transit services, parking information, weather information, and other travel-related data updates and confirmations.
Data Flows:
- traveller alerts - Traveller information alerts reporting congestion, incidents, adverse road or weather conditions, parking availability, transit service delays or interruptions, and other information that may impact the traveller. Relevant alerts are provided based on traveller-supplied profile information including trip characteristics and preferences.
Data Flows:
- trip plan - A travel itinerary identifying a route and associated traveller information and instructions identifying recommended modes and transfer information, ride sharing options, and transit and parking reservation information.
Data Flows:
- broadcast traveller information - General traveller information that contains traffic and road conditions, link travel times, incidents, advisories, restrictions, transit service information, weather information, parking information, and other related traveller information.
Data Flows:
- business directory information - Travel service information and reservations for tourist attractions, lodging, dining, service stations, emergency services, and other services and businesses of interest to the traveller.
Data Flows:
- emergency traveller information - Public notification of an emergency such as a natural or man-made disaster, civil emergency, or child abduction. This flow also includes evacuation information including evacuation instructions, evacuation zones, recommended evacuation times, tailored evacuation routes and destinations, traffic and road conditions along the evacuation routes, traveller services and shelter information, and reentry times and instructions.
Data Flows:
- interactive traveller information - Traveller information provided in response to a traveller request. The provided information includes traffic and road conditions, advisories, incidents, payment information, transit services, parking information, weather information, and other travel-related data updates and confirmations.
Data Flows:
- trip plan - A travel itinerary identifying a route and associated traveller information and instructions identifying recommended modes and transfer information, ride sharing options, and transit and parking reservation information.
Data Flows:
- broadcast traveller information - General traveller information that contains traffic and road conditions, link travel times, incidents, advisories, restrictions, transit service information, weather information, parking information, and other related traveller information.
Data Flows:
- emergency traveller information - Public notification of an emergency such as a natural or man-made disaster, civil emergency, or child abduction. This flow also includes evacuation information including evacuation instructions, evacuation zones, recommended evacuation times, tailored evacuation routes and destinations, traffic and road conditions along the evacuation routes, traveller services and shelter information, and reentry times and instructions.
Data Flows:
- emergency traveller information - Public notification of an emergency such as a natural or man-made disaster, civil emergency, or child abduction. This flow also includes evacuation information including evacuation instructions, evacuation zones, recommended evacuation times, tailored evacuation routes and destinations, traffic and road conditions along the evacuation routes, traveller services and shelter information, and reentry times and instructions.
Data Flows:
- voice-based alert notification - Information to be distributed to the traveling public via voice regarding a major emergency such as a natural or man-made disaster, civil emergency, severe weather or child abduction. The flow may identify the alert originator, the nature of the emergency, the geographic area affected by the emergency, the effective time period, and information and instructions necessary for the public to respond to the alert. The content of this architecture flow may be specially formatted for voice-based traveller information.
Data Flows:
- voice-based traveller information - Traveller information sent to the telecommunications systems for traveller information terminator. This flow may represent the bulk transfer of traveller information, including traffic conditions, incident information, transit information and weather and road condition information. It may be specially formatted for voice-based traveller information.
Data Flows:
- toll data request - Request made to obtain toll schedule information or pay a toll in advance. The request can be a subscription that initiates as-needed information updates as well as a one-time request for information.
Data Flows:
- fare and price information - Current transit, parking, and toll fee schedule information.
Data Flows:
- logged vehicle routes - Anticipated route information for guided vehicles, special vehicles (e.g., oversize vehicles) or groups of vehicles (e.g., governor's motorcade) that may require changes in traffic control strategy.
Data Flows:
- road network traffic probe data - Aggregated route usage, travel times, and other aggregated data collected from probe vehicles that can be used to estimate current traffic conditions.
Data Flows:
- transportation information for operations - Information on the state of transportation system operations including traffic and road conditions, advisories, incidents, transit service information, weather information, parking information, and other related data.
Data Flows:
- demand responsive transit request - Request for paratransit support.
Data Flows:
- selected routes - Routes selected based on route request criteria.
Data Flows:
- transit information request - Request for transit operations information including schedule and fare information. The request can be a subscription that initiates as-needed information updates as well as a one-time request for information.
Data Flows:
- transit trip request - Request for a transit trip plan that is responsive to traveller requirements such as schedule, cost, or duration.
Data Flows:
- transportation information for operations - Information on the state of transportation system operations including traffic and road conditions, advisories, incidents, transit service information, weather information, parking information, and other related data.
Data Flows:
Information Service Provider > Vehicle
- broadcast traveller information - General traveller information that contains traffic and road conditions, link travel times, incidents, advisories, restrictions, transit service information, weather information, parking information, and other related traveller information.
Data Flows:
- business directory information - Travel service information and reservations for tourist attractions, lodging, dining, service stations, emergency services, and other services and businesses of interest to the traveller.
Data Flows:
- emergency traveller information - Public notification of an emergency such as a natural or man-made disaster, civil emergency, or child abduction. This flow also includes evacuation information including evacuation instructions, evacuation zones, recommended evacuation times, tailored evacuation routes and destinations, traffic and road conditions along the evacuation routes, traveller services and shelter information, and reentry times and instructions.
Data Flows:
- interactive traveller information - Traveller information provided in response to a traveller request. The provided information includes traffic and road conditions, advisories, incidents, payment information, transit services, parking information, weather information, and other travel-related data updates and confirmations.
Data Flows:
- traveller alerts - Traveller information alerts reporting congestion, incidents, adverse road or weather conditions, parking availability, transit service delays or interruptions, and other information that may impact the traveller. Relevant alerts are provided based on traveller-supplied profile information including trip characteristics and preferences.
Data Flows:
- trip plan - A travel itinerary identifying a route and associated traveller information and instructions identifying recommended modes and transfer information, ride sharing options, and transit and parking reservation information.
Data Flows:
ISP Operator > Information Service Provider
- ISP operator inputs - User input from the ISP system operator including requests to monitor current system operation and inputs to affect system operation including tuning and performance enhancement parameters to ISP algorithms.
Data Flows:
- current asset restrictions - Restrictions levied on transportation asset usage based on infrastructure design, surveys, tests, or analyses. This includes standard facility design height, width, and weight restrictions, special restrictions such as spring weight restrictions, and temporary facility restrictions that are imposed during maintenance and construction.
Data Flows:
- equipment maintenance status - Current status of field equipment maintenance actions.
Data Flows:
- maint and constr work plans - Future construction and maintenance work schedules and activities including anticipated closures with anticipated impact to the roadway, alternate routes, anticipated delays, closure times, and durations.
Data Flows:
- road weather information - Road conditions and weather information that are made available by road maintenance operations to other transportation system operators.
Data Flows:
- roadway maintenance status - Summary of maintenance fleet operations affecting the road network. This includes the status of winter maintenance (snow plow schedule and current status).
Data Flows:
- work zone information - Summary of maintenance and construction work zone activities affecting the road network including the nature of the maintenance or construction activity, location, impact to the roadway, expected time(s) and duration of impact, anticipated delays, alternate routes, and suggested speed limits. This information may be augmented with images that provide a visual indication of current work zone status and traffic impacts.
Data Flows:
- map updates - Map update which could include a new underlying static or real-time map or map layer(s) update.
Data Flows:
Media > Information Service Provider
- external reports - Traffic and incident information that is collected by the media through a variety of mechanisms (e.g., radio station call-in programs, air surveillance).
Data Flows:
- transportation weather information - Current and forecast road conditions and weather information (e.g., surface condition, flooding, wind advisories, visibility, etc.) associated with the transportation network. This information is of a resolution, timeliness, and accuracy to be useful in transportation decision making.
Data Flows:
- multimodal information - Schedule information for alternate mode transportation providers such as train, ferry, air and bus.
Data Flows:
- qualified environmental conditions data - Current road conditions (e.g., surface temperature, subsurface temperature, moisture, icing, treatment status) and surface weather conditions (e.g., air temperature, wind speed, precipitation, visibility) that has had quality checks performed on it and has been formatted and consolidated by the Clarus system. Attributes relating to the data collection (and aggregation) are also included.
Data Flows:
- volume weather information - Accumulated forecasted and current weather data (e.g., temperature, pressure, wind speed, wind direction, humidity, precipitation, visibility, light conditions, etc.).
Data Flows:
Other ISP > Information Service Provider
- ISP coordination - Coordination and exchange of transportation information between centres. This flow allows a broad range of transportation information collected by one ISP to be redistributed to many other ISPs and their clients.
Data Flows:
- business directory request - Request for travel service information including tourist attractions, lodging, restaurants, service stations, and emergency services. The request identifies the type of service, the area of interest, optional reservation request information, parameters that are used to prioritize or filter the returned information, and sorting preferences.
Data Flows:
- emergency traveller information request - Request for alerts, evacuation information, and other emergency information provided to the traveling public.
Data Flows:
- traveller profile - Information about a traveller including equipment capabilities, personal preferences, and traveller alert subscriptions.
Data Flows:
- traveller request - A request for traveller information including traffic, transit, toll, parking, road weather conditions, event, and passenger rail information. The request identifies the type of information, the area of interest, parameters that are used to prioritize or filter the returned information, and sorting preferences.
Data Flows:
- trip confirmation - Acknowledgement by the driver/traveller of acceptance of a trip plan with associated personal and payment information required to confirm reservations.
Data Flows:
- trip request - Request for trip planning services that identifies the trip origin, destination(s), timing, preferences, and constraints. The request may also include a request for transit and parking reservations and ridesharing options associated with the trip.
Data Flows:
- business directory request - Request for travel service information including tourist attractions, lodging, restaurants, service stations, and emergency services. The request identifies the type of service, the area of interest, optional reservation request information, parameters that are used to prioritize or filter the returned information, and sorting preferences.
Data Flows:
- emergency traveller information request - Request for alerts, evacuation information, and other emergency information provided to the traveling public.
Data Flows:
- traveller request - A request for traveller information including traffic, transit, toll, parking, road weather conditions, event, and passenger rail information. The request identifies the type of information, the area of interest, parameters that are used to prioritize or filter the returned information, and sorting preferences.
Data Flows:
- trip confirmation - Acknowledgement by the driver/traveller of acceptance of a trip plan with associated personal and payment information required to confirm reservations.
Data Flows:
- trip request - Request for trip planning services that identifies the trip origin, destination(s), timing, preferences, and constraints. The request may also include a request for transit and parking reservations and ridesharing options associated with the trip.
Data Flows:
- environmental probe data - Data from vehicle safety and convenience systems that can be used to estimate environmental conditions, including measured air temperature, exterior light status, wiper status, sun sensor status, rain sensor status, traction control status, anti-lock brake status, and other collected vehicle system status and sensor information. The collected data is reported along with the location, heading, and time that the data was collected. Both current data and snapshots of recent events (e.g., traction control or anti-lock brake system activations) may be reported.
Data Flows:
- short range communications status - Status of the short range communications equipment including the current state or mode of operation and the current equipment status.
Data Flows:
- traffic probe data - Vehicle data that is used to determine traffic conditions. In a basic implementation, the data could be limited to time stamped unique identifiers that can be used to measure a vehicle’s progress through the network. In more advanced implementations, the vehicle may report current position, speed, and heading and snapshots of recent events including route information, starts and stops, speed changes, and other information that can be used to estimate traffic conditions.
Data Flows:
- shelter information - Evacuation shelter information including location, hours of operation, special accommodations, and current vacancy/availability information.
Data Flows:
- voice-based traveller request - The electronic traveller information request from the telecommunications systems for traveller information terminator. It may be specifically formatted for voice-based traveller requests. The request can be a general subscription intended to initiate a continuous or regular data stream or a specific request intended to initiate a one-time response from the recipient.
Data Flows:
- toll data - Current toll schedules for different types of vehicles as well as advanced toll payment information.
Data Flows:
- toll probe data - Aggregate probe data derived from electronic toll collection operations. Data collected could include vehicle speeds and travel times for a given link or collection of links.
Data Flows:
- incident information - Notification of existence of incident and expected severity, location, time and nature of incident. As additional information is gathered and the incident evolves, updated incident information is provided. Incidents include any event that impacts transportation system operation ranging from routine incidents (e.g., disabled vehicle at the side of the road) through large-scale natural or human-caused disasters that involve loss of life, injuries, extensive property damage, and multi-jurisdictional response. This also includes special events, closures, and other planned events that may impact the transportation system.
Data Flows:
- road network conditions - Current and forecasted traffic information, road and weather conditions, and other road network status. Either raw data, processed data, or some combination of both may be provided by this architecture flow. Information on diversions and alternate routes, closures, and special traffic restrictions (lane/shoulder use, weight restrictions, width restrictions, HOV requirements) in effect is included along with a definition of the links, nodes, and routes that make up the road network.
Data Flows:
- demand responsive transit plan - Plan regarding overall demand responsive transit schedules and deployment.
Data Flows:
- emergency transit schedule information - Information on transit schedule and service changes that adapt the service to better meet needs of responders and the general public in an emergency situation, including special service schedules supporting evacuation.
Data Flows:
- transit and fare schedules - Transit service information including routes, schedules, and fare information.
Data Flows:
- transit incident information - Information on transit incidents that impact transit services for public dissemination.
Data Flows:
- transit probe data - Aggregate probe data derived from tracking transit vehicles. Data collected could include transit vehicle speeds and travel times for a given link or collection of links.
Data Flows:
- transit request confirmation - Confirmation of a request for transit information or service.
Data Flows:
- transit schedule adherence information - Dynamic transit schedule adherence and transit vehicle location information.
Data Flows:
- transit trip plan - An origin-destination transit trip that may involve multiple modes and connections.
Data Flows:
Vehicle > Information Service Provider
- business directory request - Request for travel service information including tourist attractions, lodging, restaurants, service stations, and emergency services. The request identifies the type of service, the area of interest, optional reservation request information, parameters that are used to prioritize or filter the returned information, and sorting preferences.
Data Flows:
- emergency traveller information request - Request for alerts, evacuation information, and other emergency information provided to the traveling public.
Data Flows:
- environmental probe data - Data from vehicle safety and convenience systems that can be used to estimate environmental conditions, including measured air temperature, exterior light status, wiper status, sun sensor status, rain sensor status, traction control status, anti-lock brake status, and other collected vehicle system status and sensor information. The collected data is reported along with the location, heading, and time that the data was collected. Both current data and snapshots of recent events (e.g., traction control or anti-lock brake system activations) may be reported.
Data Flows:
- traffic probe data - Vehicle data that is used to determine traffic conditions. In a basic implementation, the data could be limited to time stamped unique identifiers that can be used to measure a vehicle’s progress through the network. In more advanced implementations, the vehicle may report current position, speed, and heading and snapshots of recent events including route information, starts and stops, speed changes, and other information that can be used to estimate traffic conditions.
Data Flows:
- traveller profile - Information about a traveller including equipment capabilities, personal preferences, and traveller alert subscriptions.
Data Flows:
- traveller request - A request for traveller information including traffic, transit, toll, parking, road weather conditions, event, and passenger rail information. The request identifies the type of information, the area of interest, parameters that are used to prioritize or filter the returned information, and sorting preferences.
Data Flows:
- trip confirmation - Acknowledgement by the driver/traveller of acceptance of a trip plan with associated personal and payment information required to confirm reservations.
Data Flows:
- trip request - Request for trip planning services that identifies the trip origin, destination(s), timing, preferences, and constraints. The request may also include a request for transit and parking reservations and ridesharing options associated with the trip.
Data Flows: