Twelve people were arrested for impaired driving by Troop K of the Pennsylvania State Police over the New Year's Day holiday period, the agency said Wednesday.

The Skippack-based troop said the 12 DUI arrests were made during "extra enforcement efforts" intended to "ensure citizens could travel safely along the Commonwealth's highways" during the holiday's increased traffic.

Troop K covers highways in Montgomery, Delaware and Philadelphia counties, in addition to providing local law enforcement for municipalities without their own police departments.

In addition to the arrests, the state police issued 469 citations and handled 45 crashes during the two-day holiday enforcement period. Four of the crashes were alcohol related, police said.