Dina Lohan, mother of actress Lindsay Lohan, entered a guilty plea to drunken driving and speeding charges in a Long Island, New York, court Tuesday.
Lohan, 51, was arrested by New York State Police after a traffic stop last September.
She is expected to be sentenced June 3 to perform 100 hours of community service, attend a drunken driver program, a victim impact session and pay $3,000 in fines and fees, according to Nassau County district attorney spokesman Paul Leonard.
Lohan's driver's license will be revoked and her car must have an interlock device -- which tests breath alcohol levels before a car can be started -- installed for a year under the plea agreement, Leonard said.
A test showed Lohan, who lives in Merrick, New York, had a blood alcohol concentration of .20, which is more than twice the legal limit, Leonard said.
The police report said Lohan was driving at 77 mph in a 55 mph zone before she was pulled over.
Lohan initially claimed that she had been injured during her arrest, but she recanted her statement after being evaluated by emergency personnel, who found no injuries.