TGV passenger flow?

Question

Anyone could please enumerate the "steps" taken by the passengers in a TGV journey (ex: 1) purchase tickets 2) turnstile(if there's any), etc..).

I particularly would want to know whether they go into some sort of turnstile or other gates.

If you can, pls also include the steps upon arriving at their station and also both departing and arriving procedures for inter-country travel (where are the passports checked, etc.)

Thank you..=D

Answer 1

I think you're on the right track.