Vice President Gore’s son pleaded guilty yesterday to possessing marijuana and other drugs when he was caught speeding this month in Orange County, Calif., and he agreed to enter a nine-month drug-diversion program. Al Gore III entered the plea at his arraignment before Judge Jacob Jager at a Laguna Niguel, Calif., courthouse, according to senior Deputy District Attorney Jaime Coulter. The plea can be withdrawn and the charges eventually could be dropped if he completes the program.

Gore pleaded guilty to two felony counts of drug possession, two misdemeanor counts of drug possession without a prescription, and one misdemeanor count of marijuana possession, according to the district attorney’s office.

Gore, 24, allegedly was driving a 2006 blue Toyota Prius at about 100 mph July 4 on Interstate 5 in Laguna Niguel. Sheriff’s deputies who stopped him said they discovered less than an ounce of marijuana and medications he did not have prescriptions for, including Xanax, Valium, and Vicodin.

Gore is the youngest of Tipper and Al Gore’s four children. He was arrested in 2003 on suspicion of marijuana possession while a student at Harvard University. He completed substance-abuse counseling as part of a program to settle the charge and now lives in Los Angeles, where he is an associate publisher of Good, a philanthropy magazine aimed at young people.