The Canadian National Railway acknowledged the gates and lights at the University Park crossing were not working correctly last Friday.
Hours before the crash that killed 26-year-old Katie Lunn. The warning gates would go down and stop traffic when no train was coming. Workers thought the problem had been fixed.
Her father says Lunn, loved Chicago and loved her work.
"She loved to dance and...inspired a lot of people," said Jerry Lunn, Katie's Father.
Katie Lunn grew up in Fort Dodge, Iowa. Her funeral will be held there Saturday.
The Canadian National Railway came under fire Wednesday for allegedly under-reporting the number of delays and blocked intersections caused by its freight trains.
The railroad says in November and December there were only 14 delays of 10 minutes or more in the Chicago suburbs. But the U.S. surface transportation board says there were more than 1,400.
Regulators want railway bosses to come to Washington to explain the huge discrepancy.