South Coast Police District Commander Superintendent Greg Moore said extra officers are undertaking public health order enforcement efforts, with one of the key focuses being to prevent movement to regional areas from Sydney, and between regional areas.

Mr Moore said the operation will include a "significant highly visible presence" on our roads.

"You will see more of our cars and officers out on the major roads but it won't just be the highways, it will be the major arterial roads and the backroads.

"We will also be conducting frequent patrols of traveller rest sports and transport hubs."

One of those operations was clearly visible to the north of the Shoalhaven where officers attached to Lake Illawarra Highway Patrol, Lake Illawarra Police District and Police Rescue - conducted COVID compliance checks along the Princes Highway at Bombo.

The high visibility operation targeted travellers from Greater Sydney heading south into regional NSW, in breach of the Public Health Order.

A total of 860 vehicles were stopped and their drivers breath tested - two motorists were fined for driving unregistered vehicles and one driver fined for having an unsecured load, while four motorists failed to display P plates.

Of note, a 75-year-old man and 70-year-old woman were issued with infringements for failing to comply with a noticed direction, after leaving Wollongong to get takeaway in Kiama.

Police Commissioner Mick Fuller said NSW Police are focussing on preventing movement to regional areas from Sydney, and between regional areas.

"The message is simple: stay at home. But unfortunately, too many people are not listening, which is why we remain in lockdown," Commissioner Fuller said.

"We need a circuit breaker from a law enforcement perspective. We need to protect regional NSW; we need to protect our communities from the spread of the Delta variant."

Additional COVID compliance traffic operations will continue across Southern Region.

There are increased fines for Public Health Order breaches:

$5000 for breaching self-isolation rules.

$5000 for lying on a permit.

$5000 for lying to a contact tracer.

$3000 for breaching the two-person outdoor exercise/recreation rule.

$3000 for breaching rules around entry into regional NSW.

Anyone who has information regarding individuals or businesses in contravention of a COVID-19-related ministerial direction is urged to contact Crime Stoppers on 1800 333 000 www.nsw.crimestoppers.com.au.

Information is treated in strict confidence.