Positive train control is required on Metra, Amtrak and other mainline cross-rail systems and is designed to automatically prevent derailments and train-to-train collisions like the CTA accident that occurred Thursday.
Officials say around 10:30 a.m. Thursday, a CTA Yellow Line train collided with a diesel-powered snow removal train traveling in the same direction, on the same tracks near the Howard CTA Depot, between the Howard and Oakton CTA train stops.
Less than two hours before, radio traffic for the CTA obtained by the I-Team indicates that train operators were notified of personnel working in the area where the collision would later occur.
Just before At 8:55 a.m., a CTA dispatcher can be heard on an agency radio recording saying, “Check to all Yellow Line operators, at this time we have personnel on the right from Howard to Oakton.”
Less than two hours later, the collision happened, injuring at least 38 people including passengers.
CTA officials did not respond to the I-Team’s questions regarding this radio traffic, but experts say automatic braking technology installed on trains is an important tool to prevent these types of accidents.
Chicagoland’s METRA commuter line and similar rail transit agencies across the country are required by federal regulations to have automatic braking systems in place.
Railroads across the country spent more than a decade and $15 billion installing the safety technology, called “Positive Train Control.”
But the CTA is excluded from that, according to the Federal Railroad Administration, because the CTA is not attached to the national rail network and does not fall under federal railroad regulations.
DePaul University Transportation Professor Joe Schwieterman tells the I-Team that a required automatic braking system, like Positive Train Control, could have prevented this accident near the northern Howard station.
“Actions like this really increase the pressure to adopt Positive Train [Control] everywhere,” Schwieterman said, adding that the national rollout of the technology had its struggles.
Schwieterman continued, “[Positive Train Control] has turned out to be really complex, technologically. There have been a number of false starts, deadlines have been extended. I think the federal government overreached initially and is coming back on some of the deadlines.”
“Old line systems like the CTA have had less of a regulatory mandate to roll it out than commuter rail,” Schwieterman told the I-Team.
The National Transportation Safety Board (NTSB) in 2009 recommended positive train control systems for all rail transit systems nationwide.
After a 2014 CTA crash at O’Hare Airport station, the NTSB reiterated its position that positive train control was necessary.
Schwieterman said Thursday’s accident should finally be a wake-up call for regulators.
“Positive train control could have done some good here,” Schwieterman said.
The CTA did not respond to the I-Team’s questions about whether its trains have any kind of emergency braking system installed.
Instead, CTA President Dorval R. Carter, Jr. said the agency is focused on the victims of Thursday’s crash and will cooperate with federal regulators leading the investigation into the crash.
“The National Transportation Safety Board announced that it will lead this investigation… CTA intends to cooperate fully with the NTSB,” Carter’s statement read. “Right now, our focus is on the customers and CTA employees who were injured in this incident.”