I don't have a picture of that in front of me, but here's what I remember. The tunnel tracks were Rule 261 between West and Grove Street. Traffic could be either east or west. There were similar signal setups in both towers, but the traffic levers were different (meaning they could have a different lever number). When it came time to change direction of the track, the process was: 1. Operator at requesting tower would push a signaling button on the interlocking machine, most likely under the traffic lever. 2. At the granting tower, the red light between the two white lights (white lights indicated traffic direction) would light, and a signal whistle would sound. His traffic lever would be unlocked. 3. If the granting tower did not want to grant the request, the towerman would push his corresponding signalling button. This would extinguish the red light and cancel the request. 4. If the granting tower wished to grant the request, usually after some arm-twisting, the towerman would throw his signal lever the other way. His lever would now be locked. This would extinguish the white light on the board, since traffic was neither east nor west at that time (this happened at both towers). (The wayside signals would be red in both directions at this time). It probably would have extinguished the red light as well. (In any case, his next action would definitely extinguish the red light.) He would then push his signaling button for his traffic lever. 5. At the requesting tower, the red light would light up, the signaling whistle would sound, and the traffic lever would be unlocked. The towerman would throw his traffic lever opposite to what it was. The red light would go out. The white light would light up indicating which direction traffic was. The traffic lever would be locked up. Traffic on that track was now opposite to what it was. The wayside signals would clear up only in the new direction of traffic. The traffic levers in each respective machine would prevent the signals on that machine from lining up a route in conflict with the established direction of traffic. John Bobinyec The Erie Lackawanna Mailing List Sponsored by the ELH&TS http://www.elhts.org To Unsubscribe: http://lists.elhts.org/erielackunsub.html ------------------------------
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