Adjournments occur because the prosecution or defense is not ready to proceed, the defendant fails to appear, or for some other reason. Before the court places a youth in custody, it must eliminate the possibilities of remand to either unconditional or conditional bail. The most common bail conditions are a curfew, residence at a stated address, regular reporting to the police, no contact with others accused of the same crime, and cooperation with other agencies in the preparation of reports. The strict rules of evidence do not apply in remand hearings and refusal of bail can be appealed. Juveniles who have not been convicted must not remain in custody or care for more than 8 days. The time limit is 24 hours for police custody.