Wheel slide, reflecting a trio of factors, led to the collision between a Chicago Transit Authority Yellow Line train and a ...

Federal investigators say an “aggressive” deceleration, a disabled braking system and slippery tracks are to blame for a 2023 Chicago train crash that left dozens of people injured ...

“This substance made the rails slippery and likely aggravated the wheel slide, reducing the train’s braking performance and contributing to the severity of the collision," the report sai ...

A Chicago Transit Authority train ... track brake application. It also noted fallen leaves and a “a black gel-like" material on the rails created slick conditions. “This substance made the rails ...