Use Case Diagrams for the green Street car park

I had worked through lots of Use Case diagrams prior to going into the class this week and it was great to be able to see new ways of thinking about the system after I thought I had gone over it all thoroughly. For example, I had not put nearly enough thought into the system of cards being issued, I had not thought about a scenario where a user’s card might be damaged or broken and thus not activate the card reader despite being valid and I had also not thought about the system for leaving the car park (having assumed it was the same as entering).

I am including some Use Case diagrams in this post. They show the “happy day” scenario for entering and leaving the car park and two others related to the car park system.