ALTAMONT — John McCullen pleaded guilty to one count of felony driving while intoxicated, in front of Judge Stephen Herrick, in Albany County Court on Aug. 20.

On May 19, at approximately 1:03 a.m., McCullen was observed driving on Western Avenue with his passenger-side taillight out and swerving between lanes, according to a release from the Albany County District Attorney’s Office.

McCullen, 50, of Altamont, was stopped by a Guilderland Police officer and showed physical signs of intoxication; he failed standard field sobriety tests and later registered a blood alcohol content of .18, the release said.

McCullen faces six months in Albany County’s jail, along with five years of felony probation; the installation of an ignition interlock device for five years; attendance at drug court; a minimum of 18 months of license revocation, subject to the Department of Motor Vehicles; and a $1,000 fine.

He will be sentenced on Oct. 15, 2015.

Vehicular Crimes Unit Bureau Chief Mary Tanner-Richter is prosecuting this case.