Can someone explain this for me?

Not just intermodal. I've had flats and steps that were setup that way. I have re-plumbed some to eliminate the extra glad hand.

 

Exactly, my company has 5 of them like this, very nice to use, until the airlines going to the pin release burst and you're stuck trying to fix it in a snow or rain storm.

 

Am I allowed to run this with the container loaded as it only can be but with the trailer extended in the rear, with nothing on/over it?

 

Such as this....

 

Yes, you can run it

 

I've never seen that before. Learn something new every day. The extendables in Baltimore there's a pin that needs to be pulled similar to the one for a fifth wheel to change the length of the chassis.

 

We have stretch 40's that have the manual release pin, and we have the airlock like those pictured. Unlikely you'll ever find a steamship line or railroad running the airlock style, too much risk of damage. That's something that a company is going to have as a private chassis, and then have the can flipped off of. There are 3 axle and 2 axle spread versions of these. In some places, you might even find a 4 axle, 45' version.

 

We leased 40/double 20/ single 20 spread axles from Milestone Chassis, Radials with inflation system and these air pins to extend/retract the spread to allow a centered 20 to hit the dock. Great units.

 

Its to slide the axles

 

Ya,and maybe a Federal Inspection Sticker