According to tests conducted by the National Transportation Safety Board, the warning lights on the railroad crossing activated 20 seconds before the arrival of the Metra train. However, the traffic light clearing the rail intersection only allowed cars to clear 18 seconds after the railway signals activated, giving vehicles only 2 to 6 seconds to clear the tracks. Roadway signal timing was under the jurisdiction of IDOT, while railway timing was under the jurisdiction of Union Pacific. No communication took place between both parties with regards to interconnected signal timing.