A sobriety checkpoint held last week along the Interstate 83 business loop in York Township netted 18 arrests, state police said.
Fifteen people were arrested for suspicion of driving under the influence, police said, and troopers arrested three other people on various drug-related charges.
Police also issued three traffic citations and found one person wanted on an outstanding warrant.
The checkpoint was held from 11 p.m. Nov. 23 until 3 a.m. Saturday, police said.
Assisting state police were York Hospital, the York County Sheriff's Office, Loganville firefighters and Zech's Towing.