Luke Williams was completing his daily work, travelling along a road he traverses every day, when tragedy struck about 2pm.

His father Scott Williams is the owner of Statewide Ag Services - the truck company his son was driving for - and said his son was being followed by a fellow driver when his truck and a sedan collided.

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Mr Williams said today was the most difficult day the business had faced in its 11-year history.

"Here we are faced with the prospect today of counselling and supporting the drivers," he said.

Mr Williams said he had told both his son and the other driver to take the rest of the week off "no questions asked" and would evaluate the situation from there. His business, which consisted of three trucks and a number of tractors, would close in the meantime.

Before Monday, Mr Williams said the business had operated without ever having been involved in a crash.

He said this tragedy had shaken the company to its core.

"I thought in my mind if we ever were involved in something it would be minor, but I didn't in my wildest nightmares ever think something like this would happen," he said.

"I said [to the drivers] over and over again that we are on the road so much, it's not their fault."

In their daily trips up and down the Midland Highway, Mr Williams and his fellow drivers had witnessed near-misses and close calls every day.

"Being in the heavy vehicle industry we see so much of it," he said.

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Tasmania Police Assistant Commissioner Jonathan Higgins said yesterday the result of road fatalities extended far beyond the two occupants of the vehicles involved and Mr Williams echoed that concern.

"This extends a hell of a long way. It goes to the emergency responders, the eye-witnesses, the people travelling along who stopped to help and call police," Mr Williams said.

Emergency services remained on the scene of the crash for about four hours while they pieced together what happened.

Mr Williams said he was thankful for the first responders who helped out his son and the second driver, calling them "absolute angels".

He said it was unlikely the truck involved would ever return to the road, but it was to thank for ensuring his son's safety.

"That truck yesterday saved my son's life. If he had been in a car, I would be going to his funeral this week," he said.

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