Yes, you can be charged, and saying you did not notice is not an automatic defense. The prosecution must prove you knew you had been involved in an accident. It does not have to prove you saw the injury or damage: knowing from the nature of the accident that injury, or in a property case damage, was probable is enough.

What the prosecution has to prove you knew

California’s jury instructions set out this element directly. For an accident causing injury or death, the jury must find the defendant “knew that he/she had been involved in an accident that injured another person” or “knew from the nature of the accident that it was probable that another person had been injured” (CALCRIM No. 2140). For an accident causing only property damage, the structure is the same: the defendant knew of an accident that caused property damage, or knew from its nature that property damage was probable (CALCRIM No. 2150). Both versions start from knowing about the accident itself.

The California Supreme Court explained in People v. Holford why knowledge of injury does not have to be firsthand. A driver who leaves the scene “seldom possesses actual knowledge of injury,” and by leaving gives up any chance to learn it, so the court stated that liability attaches to a driver who knowingly leaves the scene of an accident if the driver actually knew of the injury or knew the accident was of a nature that “one would reasonably anticipate that it resulted in injury to a person” (People v. Holford). The court added that such knowledge usually “must be derived from the surrounding facts and circumstances of the accident.” CALCRIM No. 2140’s commentary also quotes a 1966 appellate decision: knowledge of injury “may be imputed” when the injury is visible and obvious, or when the collision was serious enough that a reasonable person would assume someone was hurt.

The standard is not identical for every kind of hit and run

In a property-damage-only case under Vehicle Code section 20002, there is no injury question. Holford notes in a footnote that “neither knowledge of injury nor knowledge of the seriousness of the nature of the accident is required” for a conviction under section 20002. In People v. Carbajal, a case about restitution, the Supreme Court listed the elements of a section 20002(a) violation, quoting an earlier appellate decision: the driver “knew he or she was involved in an accident,” “knew damage resulted from the accident,” and knowingly and willfully left without giving the required information (People v. Carbajal). In an injury or death case under Vehicle Code section 20001, the knowledge question extends to the injury itself, as described above.

Contact is not required, but knowledge still is

Both instructions define being “involved in a vehicle accident” as being connected with the accident “in a natural or logical manner,” and both state that it is “not necessary for the driver’s vehicle to collide with another vehicle or person” (CALCRIM Nos. 2140, 2150). So a driver can be involved in an accident without any contact at all. That widens who counts as involved; it does not remove the knowledge element. The question remains whether you knew you had been involved in an accident.

Intoxication does not cancel the knowledge element

Being too impaired to notice is not a way around it. CALCRIM No. 2140’s authority notes state that neither voluntary intoxication nor unconsciousness caused by voluntary intoxication negates the knowledge element under Vehicle Code section 20001, citing a 2023 Court of Appeal decision. Separately, if the accident itself left you unconscious or disabled so that you could not perform the duties, both instructions say you did not have to perform them at that time, but you had to do so as soon as reasonably possible.

Evidence that bears on what you knew

Because the question turns on what you knew about the accident and its likely result, not simply on whether contact occurred, the facts that matter include:

  • Damage, or the absence of damage, to your own vehicle.
  • The physical circumstances: speed, road noise, weather, lighting, and what you could see from the driver’s seat.
  • Any noise, jolt, or reaction from other drivers or bystanders at the moment.
  • Dashcam, telematics, or phone data covering that time.
  • When and how you first learned that an accident had occurred, and what you did then.

These are the details a lawyer needs to evaluate whether the knowledge element can actually be proven in your situation, rather than assumed from the fact that an accident happened. For the broader elements and penalties once a hit and run is charged, see hit and run; if the accident caused injury, see hit and run with injury or death; if a DUI is also involved, see hit and run DUI defense.

If you left an accident scene without realizing what happened and are now facing a hit and run investigation or charge, the Law Offices of David S. Chesley can review the specific facts and what the evidence actually shows about what you knew. Call (800) 755-5174 to discuss your case.