Yes. Under Vehicle Code section 40508(a), willfully violating your written promise to appear in court, or a lawfully granted continuance of that promise, is its own misdemeanor. The statute applies “regardless of the disposition of the charge upon which the person was originally arrested,” so having the original ticket dismissed, paid, or won at trial does not erase this separate exposure once it happens.

What the written promise is

A traffic citation is a notice to appear. Under Vehicle Code section 40504(a), the officer gives you one copy, and to be released you sign the officer’s copies, which is your written promise to appear in court or before a person authorized to receive a deposit of bail. The current Judicial Council citation form, TR-130, states: “I promise to act by the date at the top of this citation. Signing DOES NOT admit guilt.”

What the prosecution has to prove

The standard jury instruction for this offense, CALCRIM No. 2240 (2026 edition), lists three elements:

  1. You received a citation.
  2. In connection with that citation, you signed a written promise to appear in court or before a person authorized to receive a deposit of bail, or you received a lawfully granted continuance of that promise.
  3. You willfully failed to appear.

The instruction defines willfully as acting “willingly or on purpose,” and it does not require that the person “intend to break the law.” So the question is why the date was missed, not whether you knew that missing it was a crime, and whether a particular absence was willful is decided by the judge or jury on the facts. An optional line in the instruction tells jurors it does not matter whether the defendant was found guilty of the Vehicle Code violation in the original citation.

Three subdivisions, three separate offenses

Section 40508 covers three situations, and each has its own terms:

  • Subdivision (a): willfully violating your written promise to appear, or a lawfully granted continuance of it. How the original charge ends does not matter.
  • Subdivision (b): willfully not paying a lawfully imposed fine, or bail installments you agreed to, within the time the court allowed, unless you gave the court a lawful excuse on or before the due date. Paying in full afterward does not undo it. Only this subdivision has lawful excuse language.
  • Subdivision (c): willfully failing to comply with a condition of a court order in a Vehicle Code case, other than an order to appear or to pay a fine. Complying later does not undo it.

The penalty

Section 40508 names no punishment of its own. That gap is filled by the Vehicle Code’s default rule for its misdemeanors: the jail term cannot exceed six months in the county jail, the fine cannot exceed $1,000, and the court may impose both, unless the code expressly provides a different penalty (Vehicle Code section 42002).

The charge does not have to stay a misdemeanor. Section 40508 is one of the offenses listed in Penal Code section 19.8, and for listed offenses Penal Code section 17(d) provides two routes to an infraction: the prosecutor files the charge as an infraction and you do not elect, at arraignment, to go forward on a misdemeanor, or the court determines it is an infraction with your consent. Treated that way, it carries a fine of no more than $250.

A warrant or a civil assessment can follow

Under Vehicle Code section 40515(a), if you signed a written promise to appear, or received a continuance, did not post full bail, and then failed to appear or missed an agreed bail installment, the magistrate may issue a warrant for your arrest within 20 days after that failure. If your promise was to appear before an officer authorized to accept bail other than a magistrate, the 20 days run from when that officer delivers the written promise to a magistrate. The statute says “may,” so a warrant is not automatic.

The court has another option. Under Penal Code section 1214.1, it may impose a civil assessment of up to $100 on a defendant who fails, after notice and without good cause, to appear. The assessment cannot take effect until at least 20 calendar days after the court mails a warning notice, the court must vacate it if you appear within the time in that notice and show good cause, and once an assessment is imposed, no warrant may issue for that same failure to appear.

Missing court after being released in a filed criminal case falls under a different statute with its own warrant and recall procedure; see failure to appear defense. Whether an unpaid fine or an old failure to appear notice can affect a driver’s license, what to do when a citation is not showing up in the court’s online case search, and how to ask the court to move a scheduled date are separate questions with their own answers.

What to do

Keep your copy of the citation and any continuance paperwork, and write down why the date was missed while the details are fresh, along with any records that show it. Those facts bear on willfulness and on any showing of good cause. Treat the missed date as its own problem, separate from the original ticket, and address both.

The Law Offices of David S. Chesley can look at your citation, the date you were given, and what actually happened, then help you address both the underlying ticket and a section 40508 charge. Call (800) 755-5174 to discuss your situation.