My main gig is industrial communications (in renewable energy farms, these days).
- The comms problem is absolutely solved (CAN Bus), and has been for a couple decades.
- Trailers usually have an electrical plug into the towing vehicle. CAN Bus is sturdy enough to include a communication link in there. Towing might present vibration and water seepage issues I’m not familiar with, but I’d still bet on that over wireless.
- Don’t do wireless on anything you want to be a) safe, and b) reliable, and c) affordable. With wireless, you can pick any two of those.
