Murray King, who operates a traffic management business, said he was stunned to find 110km/h speed posts close to 80km/h roadworks signs on a northbound freeway stretch in Wodonga.

He said when he travelled through the affected area south of the Spirit of Progress Bridge on Tuesday afternoon there was a "torrential downpour", a two-car collision and road contractors fixing a roadside railing. 

"It's a basic thing to cover existing speed signs to not confuse motorists,” he said.

"What they've done is given permission for people to travel at 110km/h.

"I nearly had an accident and there were multiple cars that were skidding and nearly going up the back of cars."

Mr King said it was "the most dangerous thing" he had seen in 30 years in the traffic management sector.

"I'm speaking from the perspective of someone who has been in the industry for a long time but I also am a motorist and family man and I'm concerned I could have had an accident because of a lack of foresight by VicRoads,” he said.

Wodonga highway patrol chief Sergeant Cameron Roberts said "VicRoads are generally pretty good with their signage" and it was unusual but not "impossible for a slip-up like this to occur".

"I think you've got to make it absolutely clear what you want to do,” Sgt Roberts said.

"You've got to remove any ambiguity which would include masking all the signs you don't want people seeing."

VicRoads failed to answer The Border Mail's questions about the circumstances of Tuesday's work.

"VicRoads would like to thank the community for.providing feedback and we are currently reviewing the traffic management plan for these particular works that have caused community concern,” a spokesman said.

"VicRoads reminds drivers to obey the reduced speed limits and temporary traffic conditions for their own safety and the safety of workers."

Last November VicRoads North East manager Bryan Sherritt launched a safety campaign in relation to road gangs, noting there had been 37 injuries since 2012.