There is a new obstacle cyclists must overcome at the 2014 Tour de France — selfie-obsessed fans jumping onto the route.

Tour de France officials, as well as cyclists, are sending warnings on Twitter after an accident occurred because of a selfie.

American cyclist Tejay van Garderen called the trend a “dangerous mix of vanity and stupidity” on his Twitter account yesterday. He also tweeted the following, with the hashtag “#think”:

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The Tour de France issued Twitter warnings of its own, along with a photo of an accident involving a selfie-seeking tourist and a cyclist:

A woman named Zoe, whose selfie was featured in an nbcsports.com story , has since received a lot of flak. Here is that selfie:

Her response?

What do you think? Was she too close to the action?