My recollection is that we could run either way in all four tunnels. For instance, to run east in Line 2', "F" had to have his traffic leaver east, (his machine's interlocking preventing him from pulling up a westbound signal into Line 2,) then the operator at "JO" could swing his traffic lever east, and then pull up signals into Line 2. No train orders required.
We had the same arrangement on the Pennsy New York Division. Tracks 1 and 4 were 251; you needed an order to go against the current of traffic. The inside tracks, 2 and 3, were 261, and you reversed traffic on them the way I described, working with the towers on either side of you.
I dug up PC Eastern Region timetable No. 7 dated 1971, thanks to Multimodalways.org
http://www.multimodalways.org/docs/rail ... 4-1971.pdf" onclick="window.open(this.href);return false;
Page 250 shows the current of traffic between Harold and JO or C west, east, west, east for tracks 4, 3, 2, 1. We didn't work with Harold, only gave him reports. F would route the trains to him.
Page 374 shows rule 261 in effect on all four tunnels, and manual block rules 305 to 316, and 319 to 342 in effect.
Here are Pennsy rules if you want to read those manual block rules.
http://broadway.pennsyrr.com/Rail/Prr/B ... k1956.html" onclick="window.open(this.href);return false;
Here's a PC rule book for comparison. Unfortunately it's missing a page with some manual block rules on it.
http://www.multimodalways.org/docs/rail ... 8-1968.pdf" onclick="window.open(this.href);return false;