Tony Martin is the man who made contact with the wayward panel that caused half the peloton to hit the ground.
The fan didn’t appear to be watching the road, but rather television cameras, before a cyclist hit his sign.
The footage showed the vast chaos caused by cyclists and bikes strewn across the road.
The peloton quickly neutralized the stage to allow the riders to receive treatment.
Martin was able to come back up and take over the stage. Caleb Ewan, Jack Haig and Miguel Angel Lopez were among the other riders selected.
Jasha Sutterlin was one of the runners who was forced to retire after the incident.
Wout van Aert was forced to take back his teammate’s bike on the right which hampered his chances.
The opening stage is in Brittany and includes five categorized climbs, culminating in the finish in the climb on the Côte de la Fosse aux Loup.
Welshman Geraint Thomas, one of Britain’s top Tour prospects, predicted a ‘chaotic’ start to the event, but not like that.
He said: “The Breton stages are up and down and to the left and to the right and there could be a bit of rain and wind, so it will be a chaotic first week.
“It will be a chaotic first week and it will certainly be difficult. Even if there are no gaps, there will be some guys who have used a lot of mental and physical energy and that will affect everyone as we approach the last week.
After the first four days in Brittany, Stage 5 will be a time trial which Thomas believes could be crucial.
“This first time trial will be important because in the mountains there are obviously differences, but in the TT there are certainly larger gaps between some of the pure climbers and the best time trials”, he added.
“Even if there aren’t any gaps, there will still be a lot of guys who have used a lot of energy – mental as well as physical, so that will still affect everyone who comes into the final week. “
Thomas won the Tour de France in 2018, while Chris Froome also enjoyed huge success with four wins in the event.