1. Positive Train Control (PTC) is advanced
technology designed to prevent train
accidents by errors such as overspeed
conditions or overrunning red signals
These systems will increase safety on
our nation’s freight and commuter
railroads.
What is PTC?
2. Three Components of PTC Systems
Wayside/Track Systems
Onboard Equipment
Office Servers
Wireless and
ground-based
communication
systems tie each
together
3. How Does it Work?
GPS satellites send information to
trains and crew members on their
location and areas where trains
should use caution.
4. What Happens Next?
Train receives information
about route when leaving
station
Wifi communication systems and GPS send
operator any changes on the route,
communicating with wayside equipment
and servers
PTC tells onboard operator to
slow and, if no response, system
automatically applies brakes
5. To Learn More Visit…
http://w3.usa.siemens.com/mobility/us/en/rail
-solutions/rail-automation/train-control-
system/pages/train-control-system.aspx