The motor doping scandal rumbles on, thanks in part to social media based speculation. Plus, read on for more of the best cycling videos

Speculation about motors in bicycles has flared up again, this time at the Tour de Bretagne.

USA Cycling U23 rider Adrien Costa took a solo win into Lannion on stage four. Upon finishing, the rider laid his bike down and was congratulated by spectators.

>>> Everything you need to know about the motorised doping scandal

Some Twitter users were quick to point out that Costa’s rear wheel appears to start turning again without propulsion from the pedals.

However, by the looks of it, his drive-side pedal hits the ground as he lays the bike down, causing the wheel to turn.

Tour de Yorkshire stage three highlights

Only in its second year and the Tour de Yorkshire pulls in some of the biggest crowds of any professional bike race around the world.

Still riding the wave of the Tour de France 2014 Grand Départ, Yorkshire gives the riders a warm welcome in all ways except the weather.

Here are the highlights of stage three, the result of which also decided the overall GC.

Giro d’Italia 2016 route

The Giro d’Italia kicks off on Friday with a time trial in the Dutch city of Apeldoorn. This video runs through the whole route, which riders will need to conquer to win the first Grand Tour of the season.

Big crash at the Red Hook Crit

Incidents involving motorcycles at bike races are becoming an increasingly problem. This crash at the Red Hook Crit looks to have been an unfortunate mechanical problem rather than the moto pilot’s fault, but the outcome still looks bad.

>>> David Millar calls for investigations to determine cause of motorbike incidents

Blackfriars Bridge segregated cycle path being used, and not just by cyclists

London is finally taking decisive steps in the right direction when it comes to making cycling an everyday, accessible mode of transport for all.

>>> Zac Goldsmith: ‘I’ll rip up London’s cycle superhighways if they don’t work’

The cycle superhighway on Blackfriars Bridge is one example of how more people will ride their bikes if they feel it’s safe to do so. What’s more, as this video shows, being segregated from motor traffic is also beneficial to others moving around the city.