CACI No. 460. Strict Liability for Ultrahazardous Activities - Essential Factual Elements
Judicial Council of California Civil Jury Instructions (2024 edition)
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460.Strict Liability for Ultrahazardous Activities - Essential
Factual Elements
[Name of plaintiff] claims that [name of defendant] was engaged in an
ultrahazardous activity that caused [him/her/nonbinary pronoun/it] to be
harmed and that [name of defendant] is responsible for that harm.
People who engage in ultrahazardous activities are responsible for the
harm these activities cause others, regardless of how carefully they carry
out these activities. [Insert ultrahazardous activity] is an ultrahazardous
activity.
To establish [his/her/nonbinary pronoun/its] claim, [name of plaintiff] must
prove all of the following:
1. That [name of defendant] was engaged in [insert ultrahazardous
activity];
2. That [name of plaintiff] was harmed;
3. That [name of plaintiff]’s harm was the kind of harm that would
be anticipated as a result of the risk created by [insert
ultrahazardous activity]; and
4. That [name of defendant]’s [insert ultrahazardous activity] was a
substantial factor in causing [name of plaintiff]’s harm.
New September 2003
Sources and Authority
• “The doctrine of ultrahazardous activity provides that one who undertakes an
ultrahazardous activity is liable to every person who is injured as a proximate
result of that activity, regardless of the amount of care he uses.” (Pierce v.
Pacific Gas & Electric Co. (1985) 166 Cal.App.3d 68, 85 [212 Cal.Rptr. 283],
internal citations omitted.)
• Whether an activity is ultrahazardous is a question of law to be determined by
the court. (Luthringer v. Moore (1948) 31 Cal.2d 489, 496 [190 P.2d 1].)
• Restatement of Torts Second, section 519, provides:
(1) One who carries on an abnormally dangerous activity is subject
to liability for harm to the person, land or chattels of another
resulting from the activity, although he has exercised the utmost care
to prevent the harm.
(2) This strict liability is limited to the kind of harm, the possibility
of which makes the activity abnormally dangerous.
• Restatement of Torts Second, section 520, provides:
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In determining whether an activity is abnormally dangerous, the following
factors are to be considered:
(a) existence of a high degree of risk of some harm to the person,
land or chattels of others;
(b) likelihood that the harm that results from it will be great;
(c) inability to eliminate the risk by the exercise of reasonable care;
(d) extent to which the activity is not a matter of common usage;
(e) inappropriateness of the activity to the place where it is carried
on; and
(f) extent to which its value to the community is outweighed by its
dangerous attributes.
• Section 519 formerly provided, in part, that “one who carries on an
ultrahazardous activity is liable to another whose person, land or chattels the
actor should recognize is likely to be harmed by the unpreventable miscarriage
of the activity for harm resulting thereto from that which makes the activity
ultrahazardous, although the utmost care is exercised to prevent the harm.” This
section was followed by the court in Luthringer, supra, and by other courts in
subsequent cases. (See Garcia v. Estate of Norton (1986) 183 Cal.App.3d 413,
418 [228 Cal.Rptr. 108].) This statement regarding forseeability is evidently still
good law in California, even though the wording of section 519 does not
presently contain the limitation.
• Strict liability in this context has been confined to “consequences which lie
within the extraordinary risk posed by the abnormally dangerous activity and is
limited to the ‘class of persons who are threatened by the abnormal danger, and
the kind of damage they may be expected to incur.’ ” (Goodwin v. Reilley (1985)
176 Cal.App.3d 86, 92 [221 Cal.Rptr. 374], citing Prosser & Keeton, The Law
of Torts (5th ed. 1984) § 75, p. 562.)
• “The important factor is that certain activities under certain conditions may be so
hazardous to the public generally, and of such relative infrequent occurrence,
that it may well call for strict liability as the best public policy.” (Luthringer,
supra, 31 Cal.2d at p. 500.)
• “It is axiomatic that an essential element of a plaintiff’s cause of action, whether
based on negligence or strict liability, is the existence of a causal connection
between defendant’s act and the injury which plaintiff suffered.” (Smith v.
Lockheed Propulsion Co. (1967) 247 Cal.App.2d 774, 780 [56 Cal.Rptr. 128],
internal citations omitted.)
• Defendant contended that the strict liability doctrine “cannot be applied unless
the defendant is aware of the abnormally dangerous condition or activity.” This
is unsound: One who carried on such an “activity is liable for injuries to a
person whom the actor reasonably should recognize as likely to be harmed . . . ,
even though ‘the utmost care is exercised to prevent the harm.’ ” (Garcia, supra,
CACI No. 460 NEGLIGENCE
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183 Cal.App.3d at p. 420, internal citation omitted.)
Secondary Sources
6 Witkin, Summary of California Law (11th ed. 2017) Torts, §§ 1575-1588 et seq.
1 Levy et al., California Torts, Ch. 7, Strict Liability for Hazardous Activities,
§§ 7.01-7.06 (Matthew Bender)
1 California Environmental Law & Land Use Practice, Ch. 1, Nuisance, Trespass,
and Strict Liability for Ultrahazardous Activities (Matthew Bender)
1A California Trial Guide, Unit 11, Opening Statement, § 11.55 (Matthew Bender)
33 California Forms of Pleading and Practice, Ch. 380, Negligence (Matthew
Bender)
23 California Points and Authorities, Ch. 234, Ultrahazardous Activities (Matthew
Bender)
1 California Civil Practice: Torts §§ 2:4-2:10 (Thomson Reuters)
NEGLIGENCE CACI No. 460
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