Why use a strictest sense? Why not a sense considered appropriate assuming the context?

The context is:

> You might know of some rule in your jurisdiction which overrides local rules, and allows certain classes of vehicles. Please disregard these rules; the park isn't necessarily in your jurisdiction. Or perhaps your religion allows certain rules to be overridden. Again, please answer the question of whether the rule is violated (not whether the violation should be allowed).

That doesn't affect at all what you consider a vehicle or what the meaning of 'in' is.