The accident occurred at 5:05 p.m. local time, and early indications are that Zanardi ventured on the wrong side of the road in a downhill.
The Italian newspaper La Repubblica quoted Mario Valentini, the coach of the Italian team, as saying that the truck had tried to avoid the collision.
“It happened in a straight descent, just before the road turned slightly,” he said. “Alex slightly crossed the other path. The truck tried to steer but was unable to avoid the impact. ”
Firefighters, national police and local police all assisted at the scene of the accident.
Zanardi is a leading Paralympic athlete, having won four gold medals on his hand bike at the 2012 and 2016 Games.
The Italian is a former grand prix driver who won the CART IndyCar Championship twice before an accident at the Lausitzring in 2001 that resulted in the amputation of both legs.
The news of the Zanardi accident shocked many people in motor racing, with former world champion and car legend compatriot Indy Mario Andretti to express his hope that the injuries of the Italian would not be too serious.“I’m so anxious and scared about Alex Zanardi that I hold my breath,” said Andretti on Twitter.
“I’m his fan. I am his friend. Please do what I do and pray for this wonderful man. “