I've stopped here many times recently to de-ice my wipers late at night. I've seen the truckers idling and even saw a family sleeping in a mini-van. I'm guessing it wouldn't be an issue IMO, but then again I don't make the rules.
I parked my 32 ft motorhome overnight. The signs say no camping, but I spoke with the volunteers inside and they said it isn't a problem. While I was there, several trucks were parked with us overnight.
You can call the rest stop.
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