Dupo police, fire department and EMS personnel responded late Sunday night to assist Illinois State Police with a vehicle crash on I-255 southbound at milepost 8.4 near the St. Clair County-Monroe County line.

ISP said a silver 2001 Toyota Camry driven by Karen Gmerek, 54, of St. Louis, was traveling south and struck the rear of a southbound beige 2005 Toyota Celica driven by Trevor Gahn, 47, of Waterloo.

The Celica left the roadway to the right and traveled down an embankment before striking a fence. The Camry left the roadway to the right before coming to rest.

Both drivers declined medical transport at the scene.

Gmerek was cited for failure to reduce speed to avoid an accident.