Overnight stay on motorway service staions in Switzerland

Hi, does anybody know if the service areas on motorways in Switzerland are as big as in France and Spain,( where we have had no problem parking up for the night),and if it is ok for overnight parking. As we are just passing through Switzerland did not really want to leave the motorway unless really necessary.
Thanks:thumb:

 

Hi ,

I found this by Googling .. might be useful ..

see attached pdf


Edit
sorry pdf won't upload

go here for link


Switzerland: service areas, motorway service areas, convenience stores

 

its only about 4 hours to cross swiss

 

Apparently you can park anywhere overnight in a camper in Switzerland as long as there isn't a sign saying otherwise and you comply with any local parking signs.
So drop off motorway and go somewhere nice! enjoy!