The Indiana State Police Post in Jasper will conduct a sobriety checkpoint somewhere in Dubois County on Friday.
The Bloomington post will conduct a checkpoint in Monroe County on Friday.
And, the Evansville State Police Post will conduct a sobriety checkpoint somewhere in Warrick County over the weekend.
The exact locations and times are not being released.
Motorists who are not impaired can expect only short delays of 2-3 minutes while passing through the checkpoints.
Indiana State Police and more than 250 other law enforcement agencies are currently participating in Operation Pull Over, which is a major enforcement effort to crack down on impaired and dangerous driving.
Indiana State Police will continue to participate in Operation Pull Over through March 23rd.