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I understand how you feel about this.  I would not want these genius ninny-nannies sitting offices and writing new rules to prevent me from getting stress from pulling pins.  I am only pointing it out to show that there is a downside to safety if bureaucrats decide that your whole job is unsafe. And I agree that this remote uncoupling may never come to fruition.  Not everything does.  It may just represent the misguided line of thinking that believes that every little danger or stress needs to be eliminated.  However, I do not see that disclaimer as meaning anything about whether the proposal is serious or not.  <o:p></o:p> As far as threatening jobs, I think the saving grace will be the devil in the details of the tri-coupler, and remote control pin lifter and anglecock.  All of those details will have to be twice as robust in order to survive in full working conditions.  That will probably quadruple the price.  They have started out by testing the tri-coupler by pulling slowly in the yard.  <o:p></o:p> That air connection in the tri-coupler is going to be really problematic.  When air hoses are coupled, the glad hands hold the seals slightly compressed with the two glad hands acting as one solid unit.  With the tri-coupler, seals are compressed together directly across the line of the couplers.  As the coupler slack runs in and out, the closing pressure on the sealing blocks increases and decreases as the couplers slide in relation to the spring loaded sealing blocks.  <o:p></o:p> This has to work without the slightest bit of binding with dirt, rust, ice, and snow.  If one of these units binds when the slack runs in, the force will destroy the mounting.  It may dump the trainline when that happens, or it may wait until the slack runs back out before it dumps the air.  Likewise, if the unit binds when the slack runs out, it will pull the air connection open and dump the air.
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