Amanda Bynes has veered off the rails again.
The "Hairspray" actress was busted for suspicion of drugged driving early Sunday after a California Highway Patrol officer allegedly watched her blow through a red light and then stop in the middle of an intersection in Sherman Oaks, Calif.
Bynes, 28, had been driving alone in a 2013 white Mercedes ML350 about 3:30 a.m. when she was popped, cops said.
"She ran a red light and stopped in the middle of (a) T-shaped intersection. Our officer observed her, and she appeared under the influence. She was unable to complete field sobriety tests, at which point she was taken to our station," CHP spokesman Leland Tang told the Daily News.
He said Bynes was given a drug evaluation and was unable to complete the series of hand-eye coordination tasks.
"She didn't make any spontaneous comments," he said when asked if she admitted taking anything.
An unidentified source told TMZ.com that cops suspect she was high on weed.
"We're waiting for toxicology tests that could take 30 to 60 days," he said.
It was last February that Bynes scored a no-jail plea deal in her prior southern California DUI case, capping a string of bizarre run-ins with the law that began more than two years ago.
Her lawyer appeared in court on her behalf and pleaded no contest to a lesser charge of alcohol-related reckless driving, the lawyer told The News.
Bynes received three years of probation and was ordered to attend three months of alcohol education classes, he said.
The more serious charge of DUI stemming from the 2012 incident was dropped.
The former child star was released from in-patient psychiatric treatment in November and was living with her parents in Thousand Oaks, Calif., until she reportedly moved out in recent months.
A mental health conservatorship that kept her on the straight and narrow recently ended.
She was formally diagnosed with schizophrenia after months of disturbing behavior that culminated with a makeshift fire set in a stranger's southern California driveway in July 2013, sources told The News.
The actress stripped her burning pants off during the wild fire and told a witness that her gasoline-drenched dog was hurt and needed help, the witness said.
Bynes fought her first misdemeanor DUI case for more than a year, previously denying she was drunk or high when she allegedly hit a Los Angeles County Sheriff's cruiser April 6, 2012.
A former Nickelodeon star, Bynes also was involved in two hit-and-run incidents in 2012 but got the misdemeanor cases dropped by reaching civil settlements with the victims.
She was later cited for driving without a license near Bob Hope Airport in Burbank, Calif., in September 2012.
The wig-wearing actress also won a conditional dismissal deal in January in her 2013 Manhattan bong-tossing case.
She agreed to see a counselor twice a week for six months as part of the New York deal.
She enrolled in classes at the Fashion Institute of Design and Merchandising in southern California and appeared to be on the mend.
"She's made great strides in her progress," her mom's lawyer previously told The News.
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