In April, he commissioned transport expert Vernon Everitt to investigate what had gone wrong.
Rotheram said some infrastructure improvements had been made, but that it was not just the rail company’s responsibility.
He said: “We’re having to foot the cost because we want the improvements for passengers, but this is something that national infrastructure should be paying for.”
He added: “The problem that we have, consistently, are issues around infrastructure and that’s because previous governments of all persuasions have not invested in the infrastructure, in the tracks and the signals.
“We’ve got analogue signals, but digital trains.”
Rotheram said lessons would be learned from the events that impacted Tuesday’s services and vowed to improve the passenger experience.
“From last year, we’ve improved by more than 50% and we’ll get better and better and better because we’ll learn”.
The Metro Mayor added that he travels by train “every day” and said he was committed to making Merseyrail “the best operating system in the country with targets of 97% for performance”.
