The Metra Railroad says it will miss its 2018 deadline to install safety technology on all of its Chicago-area routes.
Metra says the cost of its upgrade – which could reach $400 million – is one factor in the delay.
Congress’ technology mandate included almost no funding nationwide for these kinds of projects.
The technology known as Positive Train Control can monitor train positions and automatically slow or stop trains that are in danger.
Metra outlined a plan to satisfy certain criteria for the government if an extension is granted through 2020.