Metro Trains is quietly cancelling a number of its Friday night services, in order to teach train drivers how to travel through three newly built sections of railway.

The cancellations will leave travellers on lines including Werribee and Cranbourne waiting up to 40 minutes for a train.

Friday night cancellations will leave travellers on some lines waiting up to 40 minutes. Credit:Luis Enrique Ascui

"This is a long way from Jacinta Allan's claims of a turn-up-and-go train system," opposition public transport spokesman David Hodgett said.

On Friday, Metro cancelled 29 train services that ran between 4pm and 9.40pm. It will cancel the same services over the next three Fridays.