DARIEN — A 27-year-old Stamford man pulled over for driving through a stop sign was charged with drunk driving after admitting he’d been drinking, police said.

On Aug. 18 around 1:30 a.m., an officer saw a black 1998 Honda Civic drive through a stop sign. The officer pulled behind the Honda and noticed the car began speeding up and slowing down, alternating between 25 mph and 49 mph.

The officer pulled over the driver, Walter Martinez, and noticed his eyes were glassy and the Stamford man was having trouble concentrating. When asked, Martinez said he’d been drinking. He subsequently failed a field sobriety test and was charged with driving under the influence, driving without a license and driving through a stop sign.

At police headquarters, Martinez took a breath test, which showed his blood alcohol content to be .1394 at 2:34 a.m. and .1339 at 2:53 a.m., more than the leagl limit of .08.

He posted a $250 cash bond and was given an Aug. 28 court date.

EKayata@hearstmediact.com; @erin_kayata