These are the rules for halfpipe and ski cross at the 2022 Olympic Winter Games.
If a competitor stops in the halfpipe for more than 10 seconds, the competitor will be scored to that point and the run will be considered terminated. The competitor must then exit the course as soon as possible.
Ski Cross Rules
Throughout all rounds, intentional contact by pushing, pulling or any other method that causes another competitor to slow down, fall or exit the course is grounds for an automatic disqualification. Unavoidable casual contact may be deemed acceptable. All contact infractions are at the discretion of the course judges and race jury.
The race leader has the right to choose their line through the course, but is not allowed to intentionally block an opponent from passing. Such obstructions may be penalized by the course judges and race jury.
If a competitor feels that a rule violation occurred during their heat, they can make a request to any member of the race jury for the alleged incident to be reviewed. The request must be made before the next heat starts.