When passing or overtaking another skier you must avoid the skier below you. You should not stop where you obstruct a trail or are not visible from above. When entering a trail or starting a descent yield to other skiers. Check your equipment daily - particulary your release bindings. All skiers must use devices while skiing to help prevent runaway skis.
Runaway skis can be lethal whether on the trial of from falling from an aerial list.
You have a responsibility to your fellow skiers to prevent injury to them. You shall keep off posted trails and posted areas and observe all posted signs. Follow instructions carefully when using ski lifts. Do not ski slopes too difficult for your ability.