Hawaii County police announced that officers will conduct impaired-driving checkpoints and roving patrols from Friday through Halloween, which falls on Monday. The effort is part of a national and statewide campaign called “Drive Sober Or Get Pulled Over.”

Drugs, alcohol or both have been factors in 13 of the 18 traffic fatalities on Hawaii island this year, said Sgt. Robert Pauole, head of the Traffic Services Section.

“Be especially careful in residential areas by slowing down and looking for keiki on roadways and shoulders,” Pauole said in a news release. “If you plan to drink, please don’t drive. Make arrangements to ride with a designated, sober and licensed driver before you start drinking. If you can’t find one, don’t take a chance — take a taxi.”

People should drive below the posted speed limit during trick-or-treating hours, police suggested.