The brakes have been applied to Australia's fastest stretch of road.

The Labor party has vowed to end open speed limits following its landslide victory in the Northern Territory elections at the weekend, confirming it would reinstate a 130km/h limit on the derestricted 300km stretch of Stuart Highway north of Alice Springs as soon as possible.

Open speed limits were abolished by a former Labor government in 2006, but were re-instated by the following Country Liberal Party most recently led by Adam Giles.

However, a spokesperson for incoming chief minister Michael Gunner has confirmed that 130km/h signs would shortly return.

"Our policy which we have taken to several elections now is that it [Stuart Highway] should be 130km/h," the spokesman said.

The new Labor government is ending the open speed limits trial in the Northern Territory. Photo: Supplied.

"There will be no open speed limits under Labor. We're backing calls from experts in the field like the Police Association and the AMA [Australian Medical Association] who have called for 130km/h to be brought back in those zones."

The Labor spokesman said the roll-out of speed signs would occur "imminently."

He disputed claims that the re-introduction of open speed limits had not resulted in an increase in speed-related fatalities, and said Labor believed 130km/h speed limits were "very reasonable" despite experts calling for an even lower 110km/h limit in line with every other Australian state and territory.

Ahead of last weekend's election, the CLP said in a statement: "Make no mistake, if Labor is elected on August 27, Labor will remove open speed limits and slow Territory road transport, just as they would slow down the economy."

The first 200km section of Stuart Highway north of Alice Springs was derestricted in 2014 after it was found that fewer people died in the years prior to the introduction of 130km/h speed limits that were claimed to cause increased fatigue.

CLP extended the derestricted zone north by a further 100km in July following a road surface upgrade and what was deemed a successful trial period. The party had hoped to deliver open speed limits for a 1000km stretch of highway to Katherine subject to further upgrades.

Traffic data recorded during the trial indicated that 85 per cent of drivers travelled between 133km/h and 139km/h in the current derestricted zone.

The new Labor government is ending the open speed limits trial in the Northern Territory. Photo: Supplied. The new Labor government is ending the open speed limits trial in the Northern Territory. Photo: Supplied.