Two people were injured in an accident in Vandalia on Saturday. The accident occurred at 10:07 pm at U.S. Route 51 (Kennedy Boulevard) at West Orchard Street in Vandalia. Illinois State Police reports state that a vehicle driven by 26 year old Danielle N. Beck of Ramsey was traveling southbound on Kennedy Boulevard between West Fletcher Street and West Orchard Street in Vandalia. A vehicle driven by a 16 year old Juvenile was traveling behind Beck’s vehicle. Beck then began to slow as it approached an Illinois State Police Roadside Safety Checkpoint located on Kennedy near West Orchard Street. State Police say the juvenile driver failed observe the Beck vehicle slowing and collided with the rear of the vehicle. Both Beck and a passenger, 26 year old Kristen Ashley Phillips of Mulberry Grove, were taken to Fayette County Hospital for treatment of injuries. The juvenile drive was cited for failure to reduce speed to avoid an accident.