Union Pacific => UP Signal Reference => Topic started by: x2000 on May 13, 2022, 10:41:47 AM
Title: Union Pacific / UP Block and Interlocking Signals
Post by: x2000 on May 13, 2022, 10:41:47 AM
See the attached excerpt from the UP System Special Instructions Effective May 10, 2022 (Rules 9.2.1-9.2.19) or follow this link: UP Signals (https://signalquiz.com/files/signals/UP-SSI-5-10-2022-Block-and-Interlocking-Signals.pdf)