Nathan Bilow /Allsport
Electronic Timing: Two synchronized electronically isolated timing systems used in all international competitions. One system is designated system A (main system), the other system B (back-up system).
Finish Area: Portion of course where skiers end their race. It must be completely fenced in and have a gently sloped, smooth runout.
Marking the Course: Placing twigs in the snow on the inside of the racing line near the gates. The method is used for the downhill and super-G courses. Small pine needles can be spread on the course in poor visibility conditions.
Photocells: Two pieces of equipment placed at the finish line to assist in recording times. One photocell is connected to system A, the other to system B.
Poles: Usually1.2 meters to 1.5 meters long, a light metal tubing used for balance and to facilitate movement. Poles have handgrips, straps and a small disk at the bottom to provide skiers with a firm hold in the snow.
Skis: Basic alpine equipment, made of strips of shaped wood, metal, or synthetic material attached to a specially designed boot. Skis vary in length according to a skier's height and can reach 1.8 meters to 2.1 meters. Ski width varies from 7 cm to 10 cm.
Start Gate: Gate with separate electronically isolated switch contacts for triggering the start inputs of system A and system B. Timing begins when competitors cross the start line with their lower leg.
Start Signal: Commands given by the starting official. Ten seconds before the skier begins, the starter will say, "10 seconds." Five seconds later, the starter will count "five, four, four, three, two, one," then give the command "Go Ð Partez Ð Los." If possible, an automatic audible signal should be used.
Yellow Zones: Equipped with yellow flags, areas of the course established for training runs and the race.
Width of Courses: The general requirements for the width of the different courses, which is as follows: downhill, 30 meters; super-G, 30 meters; giant slalom, 40 meters; slalom, 40 meters.