Bikes are regularly inspected to check for mechanical doping and to ensure compliance with the regulations. The rules governing racing bicycles are remarkably c

Bikes are regularly inspected to check for mechanical doping and to ensure compliance with the regulations. The rules governing racing bicycles are remarkably complex and strict. Riders have been disqualified from races just for having their saddle at the wrong angle. Testers now have access to video endoscope equipment to inspect the inside of frame tubes and some kind of magnetometer device. Commissaires have the right to completely dismantle suspect bikes. Road racing bikes use carbon fibre for nearly all structural components, so ultrasound or x-ray would be perfectly viable.