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The source graphic, a Windows Metafile (WMF), for the TSDs can be downloaded here:
TSD Part 1,
TSD Part 2,
The following discusses how the National ITS Architecture provides the transportation service described by this service package. Each numbered item describes the operation of that portion of the service package identified with the corresponding number on the transaction set diagram.
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The Commercial Vehicle Administration Subsystem (CVAS) maintains the necessary credentials data and commercial driver license records in support of electronic clearance. CVAS can communicate with Other CVAS' in different jurisdictions to exchange credentials information. Then CVAS will send the credentials information to the Commercial Vehicle Check Subsystem (CVCS). CVAS will also send the cv driver record to support better access to up-to-date and accurate information in the field.
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The Commercial Vehicle Administration Subsystem maintains the necessary credentials status data, better known as "snapshots", in support of electronic clearance. The Commercial Vehicle Administration Subsystem can communicate with the Other CVAS to exchange credentials status information with other jurisdictions. The Commercial Vehicle Administration Subsystem will send the credentials status information to the Commercial Vehicle Check Subsystem.
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The CVAS maintains the necessary safety data in support of electronic clearance and can communicate with the Other CVAS to exchange safety status information with other jurisdictions. CVAS will send the safety status information to the CVCS. On an asynchronous basis, the CVCS will receive information on violators from the Enforcement Agency, as well as alerts and advisories from regional or national Alerting and Advisory Systems.
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To support wireless roadside inspection activities, an Enforcement Agency will send a targeted list of carriers, drivers, and/or vehicles of interest for enforcement purposes to CVAS. CVAS will pass this information (targeted list) onto the appropriate CVCS stations in the field. Also on an asynchronous basis, the Commercial Vehicle Driver will send vehicle and driver information to the Commercial Vehicle Subsystem (CVO driver initialization).
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The entire screening process is under the asynchronous monitoring (CVO inspector information) and control (CVC override mode) of the CVO Inspector.
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The Commercial Vehicle Check Subsystem (CVCS) can detect and identify the Basic Commercial Vehicle using non-ITS equipment to visually determine the identity the vehicle (USDOT number, license plate, etc.) (identification information). Alternately, CVCS can request tag data to retrieve identification information stored in the form of tag data from the Commercial Vehicle Subsystem (CVS). For electronic clearance CVCS will send an electronic screening request to the CVS and it will respond to CVCS with the stored screening data (screening event record). Results of the screening process can be sent back to the CVS (screening event record) for future activities. To collect data for safety checks, CVS will provide the CVCS roadside facility with its on-board safety data. Also, if so equipped either the CVS or the Freight Equipment (container, trailer, chassis) with electronic tracking and safety monitoring devices may send freight equipment information to CVCS as one more data input.
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After analyzing the safety and credentials data, the CVCS makes a pass or pull-in decision. The CVCS can send the decision to the CVS (pass/pull-in), which will forward the data to the Commercial Vehicle Driver (CVO pass/pull-in message). Alternately, the CVCS can send the decision directly to the Commercial Vehicle Driver (CVO pass/pull-in message) by using a roadside sign.
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Violation or citations information can be distributed to the proper authorities after a screening event. CVCS can send violation notification to the CVAS or directly to the Enforcement Agency. CVAS can also forward the violation notification to the Enforcement Agency. For citations, CVCS will send the citation to the CVAS, which will, in turn forward the citation information to the appropriate Enforcement Agency or Fleet and Freight Management Subsystem (FFMS) so the carrier has a record as well. On an asynchronous basis, CVCS can send a record of daily activities at commercial vehicle check stations including summaries of screening events and inspections to the CVAS (daily site activity data).
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