"Our thoughts are with his family as they deal with this unimaginable loss," he said. 

 "Investigations are ongoing and we're working with Victoria Police to better understand the circumstances of this accident."

A spokesman said VicRoads investigated all fatal crashes that take place on its road network and would be working closely with Victoria Police to investigate the factors that contributed to collision.

He said and those investigations would include if any future safety upgrades were required at the Ring Road/Wyatt Street intersection. 

The spokesman said that prior to Saturday's  accident, there had been one crash resulting in injury reported at the intersection during the the past five years.

Monday: A grieving father, who was driving behind his teenage son when he was killed in a collision with a truck, is demanding an intersection be closed.

Portland truck driver Ken Adams said he would attend Glenelg Shire's council meeting on Tuesday night to vigorously outline his concerns following Saturday's tragic accident.

He said family members, friends, colleagues and supporters would attend the 7pm meeting to back his push for the Wyatt Street intersection with Portland's Ring Road to be closed.

Mr Adams said the intersection was at the bottom of two big hills and it was impossible for trucks to stop, with up to 2000 heavy vehicles a day using the route.

He said he was on his way home from work about 5.30pm Saturday, following his son who had just bought a motorised bike, when the accident happened.

"That kid (Scott) had ridden and driven everything. He was familiar with the bike," he said.

"He was just riding the bike home. He came out of the right-hand-side. I was behind another B-double.

"The intersection is right at the bottom of the hill. After the accident I identified my son while he was underneath the truck."

Mr Adams said the Ring Road to Portland's port was built for prime movers and semi-trailers.

"There's been nothing done to the road and now there's road trains on it. My son was hit by a road train," he said.

"It was built for 26 tonne vehicles, then came 62 tonne B-doubles, now there's 78 tonne road trains and there's talk about 90 tonne B-triples.

"They just can't stop on that road."

Mr Adams, who is also undertaking a diploma of occupational health and safety, said that on the west side of the Ring Road there was a BMX track. 

"The council has a duty of care to provide a safe environment. There needs to be an overpass there," Mr Adams said.

"That intersection should be closed. It's the third accident there in the last month. The council has an obligation.

"Every truck driver has a story about someone pulling out in front of them along there. There's skid marks all over the road.

"I don't want my son to have died in vain. I'll be addressing the council as a grieving father, as a truck driver and as a safety professional."

Mr Adams said his son had lost his life but the truck driver was also a victim.

"Come hell or high water something needs to be done. It's not just about my son. It's about the truck driver and the whole community," he said.

"It's had an enormous impact. My parents had to bury a son and now we're having to do the same.

"This tragedy is effecting dozens of people. This is a small community, everyone knows everyone .

"I couldn't be prouder of the community. The support we have received has been overwhelming, phenomenal.

"But, the community deserves to be safe."

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