Train 631, which was scheduled to arrive in Crystal Lake at 6 p.m., struck a vehicle near Northwest Highway and Arlington Heights Road at about 5:20 p.m., according to Arlington Heights police.
Police said the driver of the vehicle was taken to a local hospital with apparent non-life threatening injuries.
The crossing at Arlington Heights Road and Northwest Highway reopened around 7:30 p.m.
An investigation by Metra Police is ongoing.