yes
It's supposed to have one with any open deck trailer, if the trailer doesn't have its own headboard (which an RGN won't).
A gps trailer tractor is a gps that you connect to your trailer when you go on the road and need to navigator but trailer. These are good to have if you travel alot with your trailer.
To get the answer, you need to weigh your tractor trailer empty. When you get that weight, Lets talk numbers, this is wrong but it is a big example. If your tractor trailer is 35,000 pounds empty. Means you can haul about 45,000, as long as you are not overweight on your three axles. Steer, Rear, and trailer axles. 12/34/34.
If you don't have a headboard mounted on the trailer itself, then yes, you do.
You need a Class A learner's permit.
Depends on the vehicle. You can run line haul in a tractor-trailer or straight truck. If you're running a tractor-trailer, you need a Class A. If it's a straight truck, you need a Class B.
Anything defined as a CMV will require a CDL, regardless. So if it's pulling a trailer, yes, it will require a CDL.
Yes, you need a tractor trailer hitch attachment if you do not already have one.
There are a variety of tips in order to avoid tractor trailer accidents. Some of these tips are for the driver not to drive longer than they can physically stand. If they need to take a break, then they should.
Need to know the size space being cooled.
This site looks promising http://www.nexttruckonline.com/ they sell trucks, tractor trailers and accessories/maintenance items that you would need for your tractor trailer.
Yes, a fifth wheel camper can be towed by a tractor trailer. However, you might need to lower the air bags of the tractor trailer (or simply adjust them so they're lower when they're inflated) to accommodate the camper.