When Richie Porte (Team Sky) punctured and watched the peloton disappear down the road, he was only too glad to receive a replacement wheel from Orica-GreenEdge's Simon Clarke.
The race's rule committee took exception to this 'non-regulataion assistance' and gave the GC contender a two minute penalty, all but ending his hopes of a win or perhaps even a top-five finish.
As a result of this, we started to think about the UCI's long list of rules, a compendium of regulations that it is surely impossible for riders to be completely familiar with - as stated by Porte at the time of his penalty.
So for this week's cycling quiz we've come up with ten questions to see how familiar you are with some of the UCI's laws.
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Jack Elton-Walters hails from the Isle of Wight, and would be quick to tell anyone that it's his favourite place to ride. He has covered a varied range of topics for Cycling Weekly, producing articles focusing on tech, professional racing as well as cycling culture. He moved on to work for Cyclist Magazine in 2017 where he stayed for four years until going freelance. He now returns to Cycling Weekly from time-to-time to cover racing and write longer features for print and online. He is not responsible for misspelled titles on box outs
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