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Information Service Provider

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

Archived Data Management Subsystem > Information Service Provider

  • 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 Inspection Administration > Information Service Provider

Border Inspection Systems > Information Service Provider

Business Directory Service Providers > Information Service Provider

Care Facility > Information Service Provider

Commercial Vehicle Administration > Information Service Provider

  • 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:

Emergency Management > Information Service Provider

  • 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:

Emissions Management > Information Service Provider

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:

Financial Institution > Information Service Provider

Fleet and Freight Management > Information Service Provider

Information Service Provider > Archived Data Management Subsystem

  • 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:

Information Service Provider > Business Directory Service Providers

Information Service Provider > Emergency Management

Information Service Provider > Event Promoters

Information Service Provider > Financial Institution

Information Service Provider > Fleet and Freight Management

  • 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

Information Service Provider > Maintenance and Construction Management

Information Service Provider > Map Update Provider

Information Service Provider > Media

Information Service Provider > Meteorological Service Provider

  • 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:

Information Service Provider > Multimodal Transportation Service Provider

Information Service Provider > National Meteorological Service

  • 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

Information Service Provider > Parking Management

Information Service Provider > Personal Information Access

Information Service Provider > Remote Traveller Support

Information Service Provider > Roadway Subsystem

Information Service Provider > Shelter Providers

  • 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:

Information Service Provider > Telecommunications System for Traveller Information

Information Service Provider > Toll Administration

Information Service Provider > Traffic Management

Information Service Provider > Transit Management

Information Service Provider > Vehicle

ISP Operator > Information Service Provider

Maintenance and Construction Management > Information Service Provider

Map Update Provider > Information Service Provider

Media > Information Service Provider

Meteorological Service Provider > Information Service Provider

Multimodal Transportation Service Provider > Information Service Provider

National Meteorological Service > Information Service Provider

  • 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

Parking Management > Information Service Provider

Personal Information Access > Information Service Provider

Remote Traveller Support > Information Service Provider

Roadway Subsystem > Information Service Provider

  • 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 Providers > Information Service Provider

Telecommunications System for Traveller Information > Information Service Provider

Toll Administration > Information Service Provider

Traffic Management > Information Service Provider

Transit Management > Information Service Provider

Vehicle > Information Service Provider