English/Spanish Advice of Rights - Traffic Violations
San Mateo Superior Court · Adoption
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Last updated July 3, 2026
The TR-21 form is used to inform people who have been cited for traffic violations of their basic legal rights and options, such as whether they can fight the ticket in court or pay the fine. Anyone who receives a traffic ticket in San Mateo County needs this form to understand what they can do about the citation.
This form has fillable fields — you can complete it directly in the viewer on the right.