The department, as a condition of probation, may require a person whose privilege to operate a motor vehicle is subject to suspension or revocation to attend, for not to exceed 24 hours, the program authorized by the provisions of Section 1659.
Source:
Section 14250.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=VEH§ionNum=14250.5..