by Jeff Kessler | Nov 27, 2018 | Jeff's Knowledge Nosh |
Happy Thanksgiving! Last week’s post before the holiday introduced subway signals, and today continues on the topic (make sure you’ve read the prior post before proceeeding). Think about the red signal. Often indicating “stop,” it tells trains to, well,...
by Jeff Kessler | Nov 20, 2018 | Jeff's Knowledge Nosh |
Every day, millions of people rely on subways and trains to travel, and the signal system akin to more advanced traffic lights is responsible for ensuring their safe operation. Ever wonder how they work? You’re about to find out. Most railroads operate by...
