Parking fines follow the costs-by-cause principle. Thus, qualifying them makes their size dependent on their damage.
Parking in a fire department safety zone resulting in a delayed fire response can be costly, but even if no fire response was delayed, there’s an opportunity cost for the fire department, because they need to buy way-clearing devices or extended fire response tools, if there is high likelihood of blocked zones or passage.
There is a whole department of economic science dealing with this, the internalisation of external costs into economic activity (carbon tax is an example).
Psychology.
I assume psychology is very useful for social interaction, but complicated and mid-impact enough that I personally wouldn’t bother to analog-learn it.