The crash happened Friday night on an I-95 exit ramp in Greenwich.
According to a report filed by the Connecticut State Police, as Seymour, 47, was driving her Land Range Rover off the exit 5 ramp of I-95, she stopped at a stop sign. After the car behind her stopped, troopers said Seymour backed up into that vehicle, a Mercedes C300.
When troopers arrived at the scene, they said Seymour refused all field sobriety tests. They said her eyes were blood shot, she was unsteady on her feet and her breath smelled like an alcoholic beverage.
Seymour was placed under arrest and taken to the police department for processing.
She was released on a $500 bond for the charges of unsafe backing and driving under the influence.
No one was hurt in the crash.
Seymour, who was recorded with a Greenwich address, is scheduled to appear in court on Feb. 2.