release on one's own recognizance

Definition from Nolo’s Plain-English Law Dictionary

A judge's decision to allow a person charged with a crime to remain at liberty pending the trial, without having to post bail. Likely candidates for such release are those with strong roots in the community, regular employment, and the recommendation of the prosecutor. The type of crime charged may also play a role. Often called "O.R." or "R.O.R," it is granted routinely in traffic matters, minor and technical crimes, and to people with no criminal record who display stability. (See also: O.R.)

Definition provided by Nolo’s Plain-English Law Dictionary.