Signals are dark and normally red when on, and give anywhere from 10 minuites to 2 hour warnings when activated. A green signal will usually give 5-10 minutes warning. An excellent vantage point is a pedestrian crosswalk a mile North of Highland Drive. Ex-PRR and NYC lines departed the city in no less than 8 directions, many of which have been abandoned. They serve to make Conrail's lines in the city a spiderweb.
Signals are dark on some and lit on others.
Signal activations will usually give only 5-10 minutes warning with a green signal at the last minute. The busiest place in town is the CR line bordering the North edge of downtown where several lines converge. Part of the line passes under streets and northbound trains typicaly run full throttle for the hill out of the Scioto Valley and up to parallel the NS line. A lighly traveled line extends southeast to Athens and the Ohio River. The busiest line is the main to Cincinnati.