Illinois State Police released more information Saturday about what happened.
The crash took place around 9:15 p.m. Friday near mile marker 119. Police said two cars were involved.
Both were traveling westbound when one slowed down to help stranded drivers.
Police said that's when the other car rear ended it. No one was seriously hurt.
55-year-old Martha Bourque of Kewanee was arrested for failing to reduce speed to avoid an accident.