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The standings in stage 18 at the Tour de France were again decided by a photo finish. The difference is sometimes recorded by only a 10th or 100th of a second thanks to high-efficient and precise timing systems.
Here is a look how the timing team works behind every finish line of this year's tournament.
The official time keepers of the Tour de France work out of this little room. Technicians tackle their different tasks together to decide the rankings of each stage.
Timekeeping at a highly-competitive sport like cycling is a complicated job. It needs state-of-the-art equipment, high-level technology, and experienced technicians.
Video technology is one of the most advanced methods which the timekeepers use. It records the smallest margins by capturing the riders' image at the finish line. The timekeepers use high-speed cameras using 10-thousand frame per second capacity.
The difference between winning and losing may be huge, but the numbers on the clock tell the real story. The time keepers have the final say.