Police conducted a joint operation targeting heavy vehicle compliance in the Richmond Valley area this week.
The operation, conducted at the Pacific Highway and Bruxner Highway interchange at West Ballina, saw nearly 50 vehicles inspected from 5pm on Wednesday.
A total of 18 defects were issued by RMS Inspectors, eight of which pertained to major defects regarding faulty brakes.
Two of the vehicle issued major defects were also grounded.
In addition, two drivers were directed to cease work for a 24-hour period for failing to keep proper driving records.
Police issued 18 infringements notices in relation to the operation.
They also conducted 48 random breath tests as well as numerous vehicle searches.
One driver, a 32-year-old Grafton man, was charged with driving under the influence and possessing a prohibited drug.
His vehicle was also grounded regarding faulty brakes and he was directed to cease work for not maintaining an accurate driving log.
Local police were helped in the operation by Traffic and Highway Patrol Command, as well as inspectors from Roads and Maritime Services (RMS) and Ballina Shire Council.