what do the blue and red flags mean in skiing
Slalom skiing A course is constructed by laying out a series of gates, formed by alternating pairs of red and blue poles. The skier must pass between the two poles forming the gate, with the tips of both skis and the skier's feet passing between the poles. A course has 55 to 75 gates for men and 40 to 60 for women. The vertical drop for a men's course is 180 to 220 m (591 to 722 ft) and slightly less for women.[4] The gates are arranged in a variety of configurations to challenge the competitor.