Thermal cameras will be used during this Tour de France in a bid to detect electric motors in bikes.
French sports minister Thierry Braillard announced there would be random checks on the Tour which starts at Mont Saint Michel next weekend and runs until July 24.
"With this technology which has been approved by the UCI (International Cycling Union) and by the Tour de France (organisers), those who will want to cheat will be taking very very big risks," Braillard said.
"It's a complement to what the UCI has been doing."
Tour director Christian Prudhomme added: "Those who want to cheat can be worried."
The thermal cameras have been set up by the French Alternative Energies and Atomic Energy Commission at the request of the government.
The UCI has been using magnetic resonance testing to detect motors. Both methods should be used on the Tour.
The magnetic resonance testing helped the UCI find one motor earlier this year in the bike of Belgian Femke Van den Driessche at the Under-23 cyclocross world championships.
Femke van den Driessche of Belgium was banned for six years for the first recorded case of using hidden motors in racing last April after early motor check tests were used.
The motor was found in a bike used by the U23 European cyclo-cross champion at the U23 World Championships in Belgium in January.