Metra says the issues began with the CN Freight Rail System's Positive Train Control. This is the system that controls the trains that may move too fast and can override the engineers.
Metra said CN has restored its computer systems and Metra rail service with its Milwaukee North, North Central Service and UP Northwest has been restored. Heritage Corridor has been cancelled for the morning and is expecting to run a normal evening service.
UP Northwest Line passengers from Harvard to Fox River Grove are being told travel to Barrington to board trains or seek alternate transportation..
A number of commuters said they don't really know what to expect or how to plan.
"It's frustrating because it's a letdown for sure," Metra passenger Froylan Arellano said. "I have places to be and I would rather just be on my way, but now I am here just waiting."
"Oh my God it was very hectic actually waiting on the train, on the actual ramp it was like a very long time. used to being here on time," commuter Martell Wilburn said. "I'm late for a meeting right now its just ridiculous."