Q&A - For Sale? How?

We are selling one of our cars this spring, actually its a westfalia van. Right now it's parked in our driveway with For Sale signs up in the windows. I understand that it can't be parked on any highway (streets) and I need the owners permission to park it anywhere else (I have permission to park it in the parking lot at work beside a busy street).

I looked through the MVA but couldn't find anything on having for sale signs displayed while driving. ICBC doesn't say anything about it, although they do say;

Ready to put your vehicle on the market? You can get the word out many ways, such as:

• Putting a For Sale sign in your vehicle. (Here's more information on selling your vehicle from ICBC.)

I'm pretty sure that is it illegal but looking to confirm, signs would be in the rear side windows, not obstructing the drivers view. I suspect they would be a distraction to other drivers though.