It means calm and reserve to me, perhaps coupled with a careful observation of one's manners. It's not exactly a manner of dress or speech- more a way of behaving. Bashfulness and modesty doesn't bring anything but good.
The Rca frame and basic hardware weigh less than 1.5 pounds, keeping the bike's total built weight to about 10 pounds. Tour de France riders must add ballast to hit the race's 15-pound minimum. Drag consumes up to 50 percent of a racer's energy when he's in a pack, 90 percent when he's riding alone. The tubes of the Rca frame are teardrop-shaped in cross section, improving aerodynamics.
The way the Tour de France is decided is simple. The rider who traverses the race's 2,087.81 miles in the shortest amount of time wins. Time is everything at the Tour de France. Because all of the riders start together at the beginning of each stage, the only way to measure who is winning is by time. As a rider finishes a stage, his time is recorded and is added to his overall time.