Originally Posted by Alan Shore

I think he's saying that, under the old system he commutes to base during the first 2 hours of his short call, and can commute home 10 hours later. Under the new system, he must wait 12 hours after he commutes in to commute home.

On the flip side, he'll get 2 more hours notice to set up the commute, assuming the last-minute assignment to short call.