Advice of Rights - Traffic Violations
San Mateo Superior Court · Adoption
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Last updated August 4, 2026
The TR-21 form is given to people who have been cited for a traffic violation in San Mateo County to inform them of their legal rights and options, such as whether they can contest the ticket, pay the fine, or request a trial. This form is used by anyone who receives a traffic ticket in San Mateo Superior Court jurisdiction and needs 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.