Streaky Bay police have detected a driver on the road at almost twice the legal alcohol limit.
A car was stopped in Streaky Bay on Tuesday, as police continue to target driving under Operation High Impact F5.
A 43-year-old local man was caught driving with a blood alcohol reading of 0.095.
He was issued with a six-month instant loss of licence notice and had his vehicle clamped for 28 days.
He will be summoned to appear in court at a later date.
Operation High Impact F5 targets all of the fatal five offences of drink and drug driving, speeding, distraction, seat belts and dangerous road users.
Police said the main purpose of the enforcement operation was to reinforce the message that any person using South Australian roads had to be totally accountable and responsible for their behaviour when driving.