Highway Patrol are currently conducting random drug and alcohol testing on Hinterland Way near the St Helena speed camera.
The operations are targeting traffic in both directions.
A reader told Echonetdaily he ‘didn’t break a sweat’ waiting three minutes for the drug test result ‘because I’m on a cleanse for new year’.
But, he added, ‘I’m glad they didn’t look too closely at my vehicle. I had a slight bingle and its awaiting repairs but the smash repair shop has been closed over the holidays’.