Attempts by law enforcement agencies in the region to cut back on drunken driving accounted for nine arrests in a three-day period, according to the San Luis Obispo Police Department. More crackdowns are coming as the new year approaches.

From 12:01 a.m. Dec. 21 through midnight Dec. 23, officers representing nine law enforcement agencies arrested nine people on suspicion of driving under the influence of drugs or alcohol, according to Officer Robert Cudworth of the city’s traffic safety unit. That is one more arrest than during the same time period a year ago.

There were no DUI deaths or DUI-related accidents during the three days, Cudworth wrote in a news release. He added that some agencies have yet to report.

The arrests are part of a winter holiday campaign against driving while under the influence. It involves several local police departments as well as the California Highway Patrol and the county Sheriff’s Office.

During the next several days authorities will mount DUI checkpoints in Paso Robles and the Five Cities area.

Law enforcement agencies are urging residents to report drunk drivers by calling 911.