Why a Perth truckie who died of heat stroke in Western Australia's outback left his bogged rig behind will likely remain a mystery.

Handing down his findings into the death Coroner Kevin Tavener said set against a backdrop of an increasingly subcontracted industry, employers needed to ensure worker safety standards were upheld.

Anthony John Bradanovich, then 35-years-old, was an experienced truck driver but not experienced driving in the remote far Northern Goldfields region in January 2011, the Coroner's Court has heard.

His employer Cartwright Holdings was subcontracted to transport goods to Newmont Mining's Jundee goldmine outside of the remote town of Wiluna by Toll Express.

Mr Bradanovich was sent out take a three trailer haul to the site from Perth without enough water, without a map and with no means of communication, the Coroner's Court heard.

After missing a turn off and driving 70km down the wrong track he had tried to turn his rig around and become bogged.

Mr Bradanovich was found slumped at the base of a dam wall on the Gunbarrell Highway about 23km from the town of Wiluna on Sunday 23 January, 2011 at about 4.40pm.

He was declared dead shortly afterwards.

He had walked about 30km from where his truck was found - a decision Mr Tavener said was not best practice.

"Trying to work out why he left the truck would be purely speculative," he said.

Crew at the mine site did not know what time he was meant to arrive and by the time they realised a truck had not shown up and "the alarm was raised," Mr Bradanovich was dead, Mr Tavener said.

Although a Worksafe WA investigation cleared both employers of any wrongdoing in relation to the death in 2011, the coroner handed down a series of recommendations on Monday, which suggested little had been done to prepare drivers for an emergency situation in the outback.

The Coroner recommended both Toll and its subcontractor Cartwright review their systems to ensure drivers were provided with ample water, written instructions on what to do in an emergency, and in the case of remote routes: a map or directions to their end location.

Both companies should also ensure drivers travelling outside the metropolitan area were fitted with personal locator beacons, the Coroner said.

Systems also needed to be put in place to ensure when a driver failed to arrive somebody noticed, he said.

"One of the underlying issues that became apparent during the course of the inquest was the disconnection that has arisen between employers and employers in the long-distance transport industry," he said.

"Although there may be good commercial reasons for adopting such a structure, it is necessary to ensure that safety is not inadvertently compromised."