A more thorough explanation:

King's peace is a term used in history to describe a royal subject's right to be protected from crime in certain areas that are under the king's immediate control. These areas could be the king's palace or highways. If someone committed a crime in these areas, they would be punished in the king's court. This helped to increase the jurisdiction of the royal courts over time.

For example, if someone committed a crime in the king's palace, they would be punished in the king's court. This was because the palace was under the king's immediate control and was considered a part of the king's peace.

Another example is if someone committed a crime on a highway that was under the king's control, they would also be punished in the king's court. This helped to ensure that people were safe while traveling on the king's highways.

Overall, the concept of king's peace helped to establish the authority of the king and the royal courts over certain areas. It also helped to ensure that people were protected from crime in these areas.