The Australian, isolating in Perth since his home race in Melbourne was cancelled in March, has not driven his Renault since the last day of testing in Barcelona at the end of February.
Formula One plans to get going in Austria, pandemic permitting, with two races at the Red Bull Ring from the start of July.
Ricciardo told the BBC yesterday he expected “some form of chaos, hopefully in a controlled manner” because all the drivers had been out of action, at least on the real racetrack rather than virtual, for so long.
“I am not really referencing cars everywhere. But there is going to be so much rust, a combination of emotion, excitement, eagerness,” the 30-year-old said.
“Everyone is going to be ready to go. You are going to get some guys who perform on that level of adrenalin and others who might not. So you’re going to get some bold overtakes, some miscalculated ones. You’re going to see a bit of everything.”
Ricciardo’s former boss Christian Horner, whose Red Bull team have won at home in Austria for the past two years with Dutch youngster Max Verstappen, agreed the return could shake things up.
“This is probably the longest time all the drivers have been out of a seat,” he told the Guardian newspaper.
“That could be healthy in a way. If we begin again in July, they will all be rusty as hell and there will be some incidents.”
Ricciardo, a seven-times race winner with Red Bull, is in the last year of his lucrative Renault contract with his future uncertain.
He has been spending his time on the family farm, a situation he has described as perfect for training with plenty of space and none of the stresses of travelling.
“The icing on the cake on that is we haven’t been jumping time zones, or locked in pressurised cabins three days a week up in the air, and the benefit is going to be really nice,” he said.
“Because it is so unique it was important to maximise this. And who knows? It might give me a bit more longevity in my career.”
Meanwhile, the Grand Prix Drivers’ Association is confident the precautions being taken by Formula 1 mean the sport stands every chance of resuming as planned in Austria on 5 July.
Alex Wurz, chairman of the GPDA, reassured his members that F1 had put the safety of everyone involved at the forefront of its plans to return to racing after attending a meeting with F1 and the FIA on Friday.
Hamilton wary of racing behind closed doors - Page 15