Pennsylvania State Police are continuing their efforts to combat impaired driving in Berks County.

Troopers with Troop L's Reading and Hamburg stations conducted a joint sobriety checkpoint on Route 61 South in Perry Township between 11 p.m. Saturday and 3 a.m. Sunday.

Their contact with 100 motorists during that time resulted in three of them being taken into custody for suspicion of driving under the influence of alcohol or a controlled substance. One of the motorists, police said, was also found to have drug paraphernalia.

Police said they are now better able to detect drivers who are impaired by illicit drugs or prescription medication thanks to their use of drug recognition experts.

Two other motorists were cited for either driving with a suspended license or driving without a license, and 13 warnings were issued for various vehicle code violations, police said.