Parking Nazis puzzled me?

As far as I understand it there is no actual sign for Lorries or vans, the sign in question relates to “Goods vehicles” which incorporates any and all vehicles designed for the purpose of transporting goods.
If there is any additional specification required for said goods vehicle then that information will be added to the sign in written form i.e. height, weight, width or length.

So technically you and the “Parking ■■■■” were both correct it is lorries and it is vans (even an electric milk float would come under the classification of a goods vehicle) :wink: