The MTA expects to run trains at 15-minute intervals on the main line, with 30-minute frequencies at BWI and Glen Burnie's Cromwell Station. That essentially restores the service offered during the summer.
The MTA said it did not know how long it would take to resume running trains at 10-minute intervals - as it did before the wheel-cracking problem was discovered last spring.
Wiedefeld said he authorized the resumption of service only when he was confident the software fix would be safe and effective.
"We are acutely aware of how much our customers depend on light rail service, and I am pleased that we were able to identify an interim solution," he said.
"Winter weather conditions will still be a challenge, but at this point we are better equipped to keep the trains running."
MTA employees will fan out to four stations on the northern part of the system Monday morning to welcome passengers back to the trains and thank them for their patience, Wicker said.
She said the employees will be passing out free coffee, donuts and other snacks at the Hunt Valley, Timonium, Lutherville and North Avenue stations between 7 a.m. and 9 a.m.
