Use Case Diagram - Operational Use Cases

Goal-level Use Cases associated with 'Operate the Vehicle' are depicted in the next diagram. These Use Cases help flesh out the specific kinds of goals associated with driving and parking the vehicle. The diagram focuses on the Driver of the vehicle as the central Actor. Higher level Use Cases such as maintenance, registration, and insurance of the vehicle are defined under a separate set of context Use Cases.

In addition to the extensive features described in the previous section for articulating the scenarios and their detailed steps, there are a number of other features provide by the tool that assist the System Engineer while working with Use Cases. One of the most useful of these features is the Traceability window, which provides a compelling visualization of what a given Use Case is connected to and in turn what the connected element is related to. As different Use Cases (or any other elements) are selected in the Browser window or a diagram, the window refreshes to show the selected element's connections.