The B-double was nabbed as part of Operation Austrans, an annual initiative that sees Australian and New Zealand police target heavy vehicle road safety issues, including fatigue, speed and drug use.

Joint Heavy Vehicle Taskforce officers intercepted the Victorian-registered truck at a Roads and Maritime Services (RMS) heavy vehicle station about 7pm Wednesday as it travelled southbound on the Newell Highway at Moree.

The driver, a 27-year-old, had his work diary inspected and officers downloaded the truck's engine control module, which identified it had been tampered with to allow speeds of 162km/h.

Further examinations revealed it had been tampered with several times, and that officers from Orana traffic and highway patrol had detected the truck speeding on the Newell Highway at Warkton and issued the driver with an infringement notice for travelling at 113km/h the day before.

The truck was given a defect noticed and grounded by the side of the road pending further inquiries.

NSW Police acting Assistant Commissioner Stuart Smith, Commander of the Traffic and Highway Patrol Command, said the incident was proof Operations Austrans was working.

"This truck has been grounded by the roadside, and the operator will now have to send another truck to pull the load away," he said.

"Given this truck is registered and operated interstate, we will be in contact with our counterparts in Victoria Police for the benefit of determining whether or not any further action is warranted on the fleet involved.

"Those owners and operators that tamper with speed limiters run a very great risk to their drivers, other road users, and most significantly, their businesses.

"During Operation Austrans which continues throughout June, Joint Heavy Vehicle Taskforce officers will continue to identify speeding trucks which will be grounded by the roadside and subject to 'Chain of Responsibility' investigations by the RMS.

"Speed tampering, in any form, will not be tolerated."