The number of people killed in traffic crashes in Wisconsin in July was the second lowest since the 1930s.

According to the Wisconsin Department of Transportation (WisDOT), last month, 39 people were killed in traffic crashes. In terms of traffic deaths, Wisconsin’s all-time safest July was in 1943 with 34 traffic fatalities. Traffic fatalities last month also were three fewer than July 2014, and 18 fewer than the five-year average for the month of July, according to preliminary statistics from the WisDOT. As of July 31, a total of 294 people have died in Wisconsin traffic crashes in 2015.

“To save lives and prevent injuries, law enforcement agencies throughout Wisconsin will be out in force to combat drunken driving during the annual Drive Sober or Get Pulled Over campaign from Aug. 21 to Sept. 7,” said David Pabst, director of the WisDOT Bureau of Transportation Safety. “Tragically, drunken driving is still prevalent and deadly in Wisconsin. It also is entirely preventable. Last year in Wisconsin, 162 people were killed and nearly 2,700 were injured in alcohol-related crashes.”

Traffic deaths through July were 45 more than during the same period in 2014, which was an 18 percent increase, and two more than the five-year average.