What is a signal problem on the Metro?

Signal systems in use: Block vs. The subway uses two kinds of signal systems: Automatic Block Signaling and Communications-Based Train Control (CBTC). Block signaling—the kind seen in the MTA video above—is a manually operated method that has been in use since the subway’s inception.

What causes subway delays?

Delays due to overcrowding have grown dramatically over time, and since March 2014, overcrowding has been the top reported cause of subway delay every single month.

How do subway trains communicate?

The system currently uses Automatic Block Signaling, with fixed wayside signals and automatic train stops. Many portions of the signaling system were installed between the 1930s and 1960s. Additionally, some subway lines have reached their train capacity limits and cannot operate extra trains in the current system.

How do you give the proceed signal to a train Operator?

For the most part as a passenger, you probably won’t notice anyone giving hand signals to the train that you’re on, though sometimes you’ll be able to see workers in the right of way giving a proceed sign (“while facing the operator, raise and lower the arm vertically alongside the body”) to a train.

What causes a signal failure?

Some of the most common causes of signalling failures Points failure – A fault with the movable pieces of track or their operating equipment that enable trains to change tracks. Points are interlocked with signals, so you can’t tell a train to proceed if the points have failed.

What are signal issues on a train?

A signal failure can refer to a number of situations, I work on the signal systems for network rail. It can be down to a track circuit failure which means that the signaller cannot guarantee the safety of the train as he is unable to see on their screen or panel that the section of line is clear of any other trains.

How do train signals work?

Most signalling systems use trackside signals to control the safe movement of trains and tell drivers what to do. A colour light signal shows different colours to authorise train movements. Many have additional indicators to show which route has been set up for the train and which way it must go.