FAIRFIELD - Investigators spent Tuesday night re-creating what happened during the violent crash on Kings Highway last week in an effort to determine the driver’s speed.

Police say Rosa Blanca Chavarria-Medina had a blood alcohol level three times the legal limit when she sped off the I-95 exit 24 ramp, hit several cars and crashed into a Cumberland Farms gas station.

Police say they need to know exactly how fast that car was going because it could help prevent a similar crash in the future.

To determine her speed, police conducted four test drives in a car similar in size to her Nissan at 30, 32 and 37 miles per hour. By driving half the speed they believe she was going and using algebra, investigators say they will be able to pinpoint her speed.

Lt. Jim Perez says it's believed Chavarria-Medina was driving more than sixty miles per hour before the crash.

Chavarria-Medina wore a wrist brace as she stood in court Wednesday. Chavarria-Medina is being held on $15,000 bond as well as an immigration detainer, which means she may be in the U.S. illegally.