What does PTTS stand for?
PTTS stands for "Permission-To-Train Switch"
How to abbreviate "Permission-To-Train Switch"?
"Permission-To-Train Switch" can be abbreviated as PTTS
What is the meaning of PTTS abbreviation?
The meaning of PTTS abbreviation is "Permission-To-Train Switch"
What does PTTS mean?
PTTS as abbreviation means "Permission-To-Train Switch"
