Question on using a tailgate

If truck has locking tailgate, uses simple pawl on post to latch, when open just push the pawl closed, lock handle.

In my first camper you could close the tailgate so as other have said you would be trapped for EVER! ( grin)
However as well others have said there is an escape window or hatch on the roof on campers now and back then.
Also in BC you can't travel in the back of a camper or anywhere else that doesn't have a seat belt.
However..... if your worried about someone closing the tailgate while your inside sleeping etc....
I would just put a pad lock one the arms that hold the tailgate from dropping to far when open. The only thing the padlock will do is make noise / get in the way, someone try's to close the tailgate. Now they could probably see the lock during the day, but during daylight hours there will probably be other people around as well. However at night the culprits wouldn't see the lock and it would make a sound as it hit the truck as they try to close it. Now I never tried this and just thought of it with my morning coffee, so there maybe other ideas out there if your worried about it.
Soup.

I havnt had a tailgate on my truck in so long I had to google it to see what you were talking about.
So I guess my answer would be just to take it off while camping.

realter wrote:
If you Ave a truck camper that fits within the length of your truck bed, and you can close the tailgate, what happens if you are in the camper and someone closes it? Are you trapped inside the camper?

Yes. You will be trapped forever. ;)

Seriously, I wouldn't lose any sleep over it, or just remove the tailgate and leave it at home.

My previous camper fit so I could leave the tailgate on and closed, loved having the back porch. Always worried about the same thing and was going to drill a hole through the hinge post and just drop a bolt in it. The casual person messing around would never see it if they were trying to lock you in. I instead wrapped a short ball bungie around the latch assembly so the tailgate wouldn't close the few times I was concerned that it might get shut.

Each camper has emergency exit on front.
Make sure it opens easy.