They have been in test operation in Helsinki and Tampere since Wednesday.
VR introduced a new ticketing structure about two weeks ago but it immediately faced teething troubles. The company was forced to close down ticket machines in order to allow normal sales at stations and on-line to function properly.
VR said the slowdown in ticket sales was due to heavy demand. Immediately after introducing its new ticketing structure, as many as 1.2 million sales requests were registered via its on-line service within the first 24 hours as passengers logged on in the hope of getting cheaper fares.
The system was overwhelmed with as many as 5,000 requests per second. VR has pointed the finger of blame at IT subcontractors Accenture and Tieto.
While ticket machines were closed, VR requested passengers to buy tickets on the train to avoid lengthy queues at station ticket offices. VR says passengers can still continue to purchase tickets on trains without additional fees until October 14.