You have been cited under § 2.01 of the Public Courtesy Code: Failure to Yield at the Doors
OFF FIRST. THEN ON.
This is the foundational law of trains. It has been the foundational law of trains since there have been trains. The doors opened and you walked straight into the people trying to get out, like a salmon with a backpack. Let. People. Off.
This is not a fine. There is no fine. Think about what you did.