H.B. No. 2492 amends Article 17.291(b) of the Code of Criminal Procedure to establish new guidelines for the detention of individuals arrested for certain crimes involving family violence. The bill specifies that the head of the agency arresting or holding a person may hold them for a period of four hours after bond has been posted, with the possibility of extending this detention for an additional period not to exceed 48 hours. This extension is contingent upon a magistrate's written authorization, which must conclude that the violence would continue if the person is released and that there is probable cause regarding the person's past offenses involving family violence or the use of a deadly weapon.

The bill clarifies that these amendments apply only to individuals arrested on or after the effective date of the Act, which is set for September 1, 2025. Those arrested prior to this date will be governed by the existing law at the time of their arrest. The changes aim to enhance the safety of potential victims of family violence by allowing for a longer detention period under specific circumstances.