A boss at train company TransPennine Express has told the BBC he's not proud of the service over the summer.
Paul Watson, who is the operations manager at the firm, says he hopes the new timetable will improve it.
Passengers between York and Scarborough have suffered months of delays and cancellations.
There's also been chaos on Northern services across the north.
"Clearly we got it wrong and the service didn't operate as we wished", Mr Watson said.
"We're determined to get it right."