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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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On an asynchronous basis, the Basic Commercial Vehicle can pass a scale at mainline speeds and the weight information will be sent to the Commercial Vehicle Check Subsystem (CVO weight and presence). The Commercial Vehicle Check Subsystem can identify the Basic Commercial Vehicle using non-ITS equipment to visually determine the identity of the vehicle (USDOT number, license plate, etc) (identification information). Alternately, the Commercial Vehicle Check Subsystem can request vehicle tag information from the Commercial Vehicle Subsystem (request tag data). The Commercial Vehicle Subsystem will respond with the unique tag ID and related vehicle information (tag data).
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The Commercial Vehicle Check Subsystem can request screening data from the Commercial Vehicle Subsystem (electronic screening request). In response, the Commercial Vehicle Subsystem will send the results of a prior screening activity (screening event record). The results of the current Commercial Vehicle Check Subsystem activity can be sent to the Commercial Vehicle Subsystem (screening event record) at the completion of the process.
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After the data has been reviewed, a decision is made in the Commercial Vehicle Check Subsystem to either allow the vehicle to pass or require it to be stopped. The Commercial Vehicle Check Subsystem can send the message to the Commercial Vehicle Subsystem (pass/pull-in), which is forwarded to the Commercial Vehicle Driver (CVO pass/pull-in message). Alternately the Commercial Vehicle Check Subsystem can send the message directly to the Commercial Vehicle Driver using a roadside sign (CVO pass/pull-in message).
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