CVC 4000 — Registration Required
What a California Vehicle Code §4000 citation actually accuses you of, and the angles drivers use to contest one by mail.
What the court has to find
Driving or parking a vehicle on a highway without valid registration (subsection (a)(1)).
Defense angles that fit this section
This is typically a correctable violation: proof of current registration and a signed-off citation normally reduce it to a dismissal fee. If registration was valid at the time, documentation resolves it.
Contest your CVC 4000 ticket by mail
A Trial by Written Declaration lets you fight it without a court date — and losing still leaves you the right to a brand-new in-person trial.
Start with your ticketThis page explains the statute in general terms; it isn't legal advice about your specific case. See the Trial by Written Declaration FAQ for how the mail-in process works.