Wohnmobilstellplatz, Reisemobilstellplatz, Parkplatz

[gasgas]

I have previously been all over France and a bit into Germany but I am now about to start on 4 weeks in Germany, the end destination being Oberammergau for the passion play. What's the difference between the Wohnmobilplatz and the Reisemobilplatz and the parkplatz?

 

[saxonborg]

With a bit of Googling looks like the first two are almost the same i,e motorhome parking places and the third one is general parking lots or parking spaces for any vehicle.