Citation Processing
The City contracts with Citation Processing Center for parking administration services. Payments, inquiries, lost tickets, information, or to request dismissal can be made online.
Citation Reviews
Citation Reviews may be completed by using a Citation Dismissal Form (PDF) and mailing it to:
City of Diamond Bar
Citation Processing Center
P.O. Box 10479
Newport Beach, CA 92658-0479
Any additional questions regarding parking citation processing can be answered by calling 800-989-2058 or by visiting www.citationprocessingcenter.com
Lack of Signage
Please note, lack of adequate signage does not constitute grounds for dismissal of parking citations. Vehicle Code 22507.6
Additional Information
For any additional questions regarding street sweeping contact the Public Works Department at 909-839-7040.