Oversized/dolly

The answer could be both. Depends on trailer. Some have a remote steer control in tractor cab. Some have a remote they can give to the escort and they can control the steer dolly.

 

https://www.youtube.com/watch?v=7dQYbCaxZPA

It greatly depends on equipment type.

 

If it's the little "square box" that I think you are talking about, if you look close at that little box you will see someone crunched in there and he/she will be the one that is steering it. Never heard of a remote steer by an escort or being steered by the driver, but really dont know

 

The rear dollies that I pulled had a remote control that was given the rear escort. It was probably 4"x6" and it could raise or lower the load, steer left or right, lock or unlock the steering pin, and start and stop the rear engine. Some of the bigger trailers I have seen had a platform for the steerman to stand on when going around corners. The ones with the little cabs under the trailer I have only seen pictures of. We had a Roehl driver who came from their bridge beam division who said their trailers steered by a box that was in the cab of the tractor.

 

The only one I’ve heard of that is driven by someone in the dolly itself are used by Boeing when transporting aircraft parts, I guess there might be others but I think most are done by a Pilot car.

 

Well in that case would the pilot car driver be required to have a CDL? Sure would not want to be that guy riding in that box under the trailer.

 

There has been alot of issues about question.
Some states were saying yes they had to have CDL others said no.
Now if you are in the stand up cage and it has a hand valve to control the brakes, yes you do need a CDL.
Ny. has some weird rules on that as well. Depends on the ld. and the steering system.
Also, the steer man can not be a pilot car driver escorting the ld. Has to be a driver who can ride with the rear pilot car.

 

Its called a Jeep, and both drivers have to have CDL's. I hauled bridge beams in the 90's.

 

I drove a steer car hauling beams and poles a few centuries ago. There are also other steer trailers. Depends on the application and load.