In the Riverina alone, there have been four truck accidents in a month. 

Traffic and Highway Patrol Command Riverina Senior Sergeant Darryl Thomas said 11 locations over NSW and three in the Riverina were set up from midday on Sunday to midday on Tuesday.

"This was an operation that put together in the last three months culminating from a number of heavy vehicle accidents that has happened in the last six to 12 months," he said. 

Official numbers have not been released but Senior Sergeant Thomas said offences included drink driving, drug driving, speed limiters being tampered with and log book offences. 

"It's always the majority of the drivers doing the right thing and a minority doing the wrong," he said. 

"If you’re a heavy vehicle driver maker sure you’re doing the right thing and abiding by the law and the regulations."

Senior Sergeant Thomas said while police were there, they also conducted random breath tests on drivers of cars. 

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