And to return to the "negative points" discussion.....
People can get time penalties. Levi Leipheimer was fined 10 seconds last year, after he had a mechanical. His team car provided a bit more draft than usual to bring him back up to the break he was in. There is some discussion whether a French rider would have been fined in the same circumstances... The judges have some lee-way. Leipheimer himself profited in last year's Tour of California, when a crash outside the neutralised section would have left him losing
the leader's jersey.
Or people can get points subtracted. And if they happen to have less points earned than fined, they will have negative points. A minor offense like peeing in public can result in such a penalty. Riders are of course allowed to take a nature break, but shouldn't do so when there are spectators around. We don't know if Marcus Burghardt was handed such a penalty yesterday, but it seems he broke the rule when he took a quick time-out after the Croix de Montvieux, while riding of course. And with fans waiting on the side of the road.
All that can be accompanied by financial fines as well. The Swiss Franken has been replaced by the euro as the official Tour currency.