The East Coast Truckers have cancelled their annual children's convoy for the second year in a row due to concerns over coronavirus.
The event normally takes place in August and attracts thousands of people along its route from Norwich through Great Yarmouth to Pleasurewood Hills.
It would have been the charity's 35th year running the convoy.
Trevor Howlett, vice-president and manager of the event, said: "We decided it would be too risky to do it as we don't know what the situation is going to be in August."
He also mentioned that Great Yarmouth Borough Council have cancelled both the Wheels and the Maritime festivals amid uncertainty over Covid restrictions.
"So if we were to run our convoy, that wouldn't look very good. If it was a sunny day, Marine Parade would be absolutely packed. We're thinking of the safety of everyone involved," he said.
Some trucks will be on show on July 17 at the Forum in Norwich.
There will be music by Mitch C Scott and an exhibition of seven trucks that would normally take part in the convoy.
"We hope people will still be interested. You're hoping all the people will be back again next year," Mr Howlett said.
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