UCI announced plans on Tuesday (3rd May) to test thousands of bikes for hidden motors - including at the Tour de France and Rio Olympics

SOUNDBITE (English) Mark Barfield, UCI technical manager:

"Working along with partners, we looked at four potential solutions to this challenge: ultrasonic, x-ray, thermal imagining, and magnetic resistance interrogation."

SOUNDBITE (English) Mark Barfield, UCI technical manager (on problems with thermal imaging):

"On the bottom right, we have a very, very clear image showing the heat from a rider's leg. And that is with noting, this is our consistent feature as we look across the photographs I'm going to show you."

SOUNDBITE (English) Mark Barfield, UCI technical manager:

"So, magnetic resistance. this slide gives a brief explanation behind the methods we are utilizing in magnetic resistance testing."

SOUNDBITE (English) Mark Barfield, UCI technical manager:

"Therefore, we have device which is capable of detecting motors and various power outputs, both mechanically shielded and unshielded - the control components for those motors. Magnets. We could detect any type of electro magnet, either energized or non energized, and we could also detect batteries. We could do this in frame materials of any type"

SOUNDBITE (English) Mark Barfield, UCI technical manager:

"We scanned all of the main tubes of the bike, and we are now going to scan the wheels."

SOUNDBITE (English) Brian Cookson, UCI President:

"I think this is very effective, it can detect all forms of technology that are available at the moment, as far as we know. And it can detect, I believe, technology that might be developed in the near future."

SOUNDBITE (English) Brian Cookson, UCI President:

"Obviously we are aware of the media interest that there's been in the last few weeks, including the Stade 2 television programme. We have looked at the technology behind that, we have looked at the examples used. We believe that the system we developed is more effective than the system that they used and we believed that the results that they showed were inconclusive."