SECURITY measures and protocols for next month's G20 World Leaders' Summit have been tested during an exercise in Brisbane.
Taking advantage of the Labour Day public holiday, the exercise, codenamed Paro Mike, involved the rollout of a huge security presence for the simulated arrival of a world leader at Brisbane Airport.
The exercise involved a full-scale motorcade, complete with police escort, which then made its way into Brisbane's central business district.
Federal Justice Minister Michael Keenan, who oversaw the exercise from the city-based G20 nerve centre, said Australia had an outstanding reputation for delivering world-class events, but would not say how much the two-day summit would cost Australian taxpayers.
It is understood the summit could cost taxpayers more than $480 million.
"It is also about delivering a professional event of the highest standard and minimising disruption to Brisbane residents and businesses," he said.
"The safety of the community is the highest priority of any government and Australia has well developed and rehearsed national security arrangements that will be in place in Brisbane."
Mr Keenan said there would be up to 6000 police on the streets of Brisbane for the summit including 1500 from partner police forces in the United States and New Zealand along with 600 Australian Federal Police personnel.
"We have conducted numerous exercises over the past months to test our various responses," he said.
"We want to deliver a safe, successful and secure G20 Leaders' Summit."
Mr Keenan said the exercise involved a fleet of nine custom-built BMWs the Australian Government specifically purchased for the event.
The G20 World Leaders' Summit will be held on November 16 and 17.