Prudhomme said the Tour's late August start will produce a unique race.
"It has never left so late, formally in the summer but outside the holiday period. A singular Tour. It will be less hot, there will undoubtedly be more wind."
The Frenchman also outlined some of the measures that will be put in place for the race.
“The situation is changing day by day," he said. "The specifications will be defined in the period from the end of July to the beginning of August.
“There will surely be no kisses or hugs during the ceremonies," he said.
"And one might think that it is certainly not the best year to seek autographs.
"The public will be able to come to the Tour but there will probably be more or less severe filtering."
"In the mountains, we will favour those who go up on foot, by bike or in the transport set up by the communities.
"But, I repeat, the situation is changing day by day. What will it be in two months?"
"What we can say is there will be a race with the best riders. The advertising caravan will have a hundred vehicles, around 60 per cent compared to previous years. The economic crisis is affecting the various business sectors."
“Sanitary measures will be applied on the Dauphiné. Like the other races on the calendar."
Prudhomme also explained the early silence from he and Tour organisers' ASO.
“From the start, we have been in contact with public authorities, and with sports authorities. I was also struck by the unity of the cycling world and the listening of the authorities.
"There was little communication in March and April, apart from the announcement of the postponement dates, because I found it incongruous that we were talking about sport at that time.
"But we have worked and we continue to do so. We began to take up the challenge by obtaining the approval of all the elected representatives concerned.
"What I have heard most often is "the Tour will always be the Tour."