So what's the deal with weight stations?

Nope, only commercial traffic must stop. Actually, sure they will get cranky IF you stop. Happy travels.

Even if the electronic sign tells you, do not.

I wave as I drive past the weigh stations.

Commercial vehicles only.

Recreational vehicles are exempt. In fact the attendant will likely get annoyed if you stop while he/she is busy.

Unless you are over 20,000 lbs per axle or need to keep a log book, they don't care. And none of us are close to 20K per axle...

Only if you are using your RV to haul commercial goods.

No. Only commercial trucks need stop. I’m sure that’s simplification but, just keep going.

no. Keep on truckin'