The Tour de France is stepping up its fight against mechanical doping in the peloton.
Each stage winner will have his bike thoroughly tested by newly developed X-ray machine.
Cycling's governing body wants to verify that there are no additional items that could provide energy to the wheel.
According to the UCI's Jean-Christophe Peraud: "It`s the same procedure like having an X-ray in a hospital, to see if we have broken a rib. Now we can see if there is something that should not be there."
The UCI, cycling's governing body is using a package of measures. This includes an thermal camera while the race is in full flow to detect unusual heat sources.
Along with a tablet device to scan for hidden motors or magnetic wheels at the start of each stage.
In case of strong suspicion, a bike will be completely disassembled
Since the start of the tour, organisers say more than 1,500 controls have taken place.