SEARCHING A VEHICLE
WITHOUT A WARRANT
The Carroll Doctrine
Bryan R. Lemons
Senior Legal Instructor
The Federal Bureau of
Investigations reports that 93 law
enforcement officers were killed while
engaged in traffic stops or pursuits during
the period 1989 – 1998.
1
During 1998
alone, 9 law enforcement officers were
killed and another 6,242 were assaulted
during traffic stops or pursuits.
2
Fortunately, the Supreme Court has long
recognized the very real dangers faced by
law enforcement officers who confront
suspects located in vehicles.
3
Further, the
Court has noted that “for the purposes of
the Fourth Amendment, there is a
constitutional difference between houses
and cars.”
4
This “constitutional
difference” can result in the warrantless
search of a vehicle being upheld under
circumstances in which the search of a
home would not.
5
A vehicle may be searched without
a warrant in a variety of situations. In the
next few editions of the Quarterly Review,
1
Federal Bureau of Investigation, Uniform Crime
Reports, “Law Enforcement Officers Killed and
Assaulted in 1998”, Table 19, Page 32
2
Id. at Table 20, Page 33 and Table 40, Page 88
3
See Michigan v. Long, 463 U.S. 1032, 1048
(1983)(Noting “danger presented to police officers
in ‘traffic stops’ and automobile situations”);
Pennsylvania v. Mimms, 434 U.S. 106, 110
(1977)(Decision rested, in part, on the “inordinate
risk confronting an officer as he approaches a
person seated in an automobile”); and Adams v.
Williams, 407 U.S. 143, 148 n.3 (1972)(Citing a
study indicating that “approximately 30% of police
shootings occurred when a police officer
approached a suspect seated in an automobile”)
4
Chambers v. Maroney, 399 U.S. 42, 52 (1970)
5
Cardwell v. Lewis, 417 U.S. 583, 589 (1974)
I will discuss five of the most frequently
encountered exceptions to the warrant
requirement of the Fourth amendment, as
those exceptions apply to searches of
vehicles. In discussing each exception, the
background, requirements, and scope of
the search will be addressed. With regard
to the scope of the search, the articles will
focus on four specific areas: The
passenger compartment of the vehicle; the
trunk of the vehicle; unlocked containers
located in the vehicle; and locked
containers located in the vehicle. The first
article in this series will deal with
searching a vehicle pursuant to consent.
Subsequent articles will deal with
searching a vehicle incident to arrest;
searching a vehicle under the mobile
conveyance exception (Carroll Doctrine);
searching a vehicle as part of the inventory
process; and searching a vehicle during a
lawful Terry stop.
BACKGROUND
“It is well-settled that a valid
search of a vehicle moving on a public
highway may be had without a warrant, if
probable cause for the search exists, i.e.,
facts sufficient to warrant a man of
reasonable caution in the belief that an
offense is being committed.”
6
This
exception was first established by the
Supreme Court in the 1925 case of Carroll
v. United States,
7
and provides that, if a
law enforcement officer has probable
cause to believe that a vehicle has
evidence of a crime or contraband located
in it, a search of the vehicle may be
conducted without first obtaining a
warrant. There are two (2) separate and
distinct rationales underlying this
exception. First, the inherent mobility of
6
Fernandez v. United States, 321 F.2d 283, 286-
287 (9
th
Cir. 1963)(citations omitted)
7
267 U.S. 132 (1925)
vehicles typically makes it impracticable
to require a warrant to search, in that “the
vehicle can be quickly moved out of the
locality or jurisdiction in which the
warrant must be sought.”
8
As the
Supreme Court has consistently observed,
the inherent mobility of vehicles “creates
circumstances of such exigency that, as a
practical necessity, rigorous enforcement
of the warrant requirement is impossible.”
9
For this reason, “searches of cars that are
constantly movable may make the search
of a car without a warrant a reasonable one
although the result might be the opposite
in a search of a home, a store, or other
fixed piece of property.”
10
Second, an
individual’s reduced expectation of
privacy in a vehicle supports allowing a
warrantless search based on probable
cause.
Automobiles, unlike
homes, are subjected to
pervasive and continuing
governmental regulation
and controls, including
periodic inspection and
licensing requirements. As
an everyday occurrence,
police stop and examine
vehicles when license
plates or inspections
stickers have expired, or if
other violations, such as
exhaust fumes or excessive
noise, are noted, or if
headlights or other safety
equipment are not in proper
working order.
11
8
Id. at 153
9
Opperman, 428 U.S. 364 at 267
10
Cooper v. California, 386 U.S. 58, 59
(1967)(citation omitted)
11
Opperman, 428 U.S. at 368
REQUIREMENTS
There are two (2) requirements for
a valid search under the mobile
conveyance exception. First, there must
be probable cause to believe that evidence
of a crime or contraband is located in the
vehicle to be searched. “Articulating
precisely what ... ‘probable cause’ mean[s]
is not possible.”
12
Suffice it to say,
probable cause cannot be “readily, or even
usefully, reduced to a neat set of legal
rules.”
13
Instead, the Supreme Court has
found probable cause to exist “where the
known facts and circumstances are
sufficient to warrant a man of reasonable
prudence in the belief that contraband or
evidence of a crime will be found.
14
In
essence, this simply means that before
conducting a warrantless search of a
vehicle, a law enforcement officer should
have sufficient facts available to him so
that if he attempted to obtain a warrant
from a magistrate judge, he would be
successful. As noted by the Supreme
Court in United States v. Ross:
15
“[O]nly
the prior approval of the magistrate is
waived; the search otherwise [must be
such] as the magistrate could authorize.”
16
Thus, a search of a vehicle based upon
probable cause “is not unreasonable if
based on facts that would justify the
issuance of a warrant, even though a
warrant had not actually been obtained.”
17
In determining whether probable cause
exists, courts utilize a “totality of the
circumstances” test.
18
12
Ornelas v. United States, 517 U.S. 690, 695
(1996)
13
Id. at 695-696
14
Id. at 696
15
United States v. Ross, 456 U.S. 798 (1982)
16
Id. at 823
17
Id. at 809
18
Illinois v. Gates, 462 U.S. 213 230-231 (1983)
Establishing probable cause to
search a vehicle may be accomplished in a
variety of ways. For example, a law
enforcement officer may be able to
establish probable cause based on a tip
provided to him by a reliable confidential
informant.
19
Additionally, when a law
enforcement officer personally observes
evidence or contraband in plain view
inside a vehicle, probable cause can arise.
Additionally, the “plain smell” corollary to
the plain view doctrine may allow a law
enforcement officer to establish probable
cause based upon his or her sense of smell.
In United States v. Miller,
20
law
enforcement officers used both plain view
and plain smell observations to justify the
warrantless search of the suspect’s vehicle.
As stated by the Ninth Circuit:
The police officers who
arrived at the Elm Street
address detected a strong
smell of phylacetic acid,
known to be used in the
manufacture of
methamphetamine,
emanating from Miller’s
car. In addition, the
officers observed a
handgun in plain view on
the front floor and
laboratory equipment
commonly used in the
manufacture of
methamphetamine on the
backseat of Miller’s car.
These plain view, plain
smell observations ... gave
the officers sufficient
independent probable cause
to search Miller’s car
without a warrant.
21
19
Maryland v. Dyson, 527 U.S. 465 (1999)
20
812 F.2d 1206 (9
th
Cir. 1987)
21
Id. at 1208-1209. See also United States v.
The second requirement for a valid
search under the mobile conveyance
exception is that the vehicle be “readily
mobile.” This does not mean that the
vehicle be moving at the time it is
encountered, only that the vehicle be
capable of ready movement. Illustrative
on this point is the Supreme Court’s
decision in California v. Carney.
22
In
Carney, law enforcement officers searched
a motor home after establishing probable
cause that marijuana was located inside.
At the time of the search, the motor home
was parked in a parking lot in downtown
San Diego. Upon finding marijuana, the
defendant was arrested and later pled nolo
contendre to the charges against him. On
appeal, the California Supreme Court
overturned the defendant’s conviction,
finding that the mobile conveyance
exception did not apply in this case, in that
“the expectations of privacy in a motor
home are more like those in a dwelling
than in an automobile because the primary
function of motor homes is not to provide
transportation but to ‘provide the occupant
with living quarters.’
23
The Supreme Court, however,
disagreed, finding the mobile conveyance
exception applicable in this case. After
reviewing the bases for the exception, the
Court concluded:
When a vehicle is being
used on the highways, or if
it is readily capable of such
use and is found stationary
in a place not regularly
used for residential
Harris, 958 F.2d 1304 (5
th
Cir.), cert. denied, 506
U.S. 898 (1992)(plain smell) and United States
v. Anderson, 468 F.2d 1280 (10
th
Cir. 1972)(plain
smell)
22
471 U.S. 386 (1985)
23
Id. at 389 (citation omitted)
purposes – temporary or
otherwise – the two
justifications for the vehicle
exception come into play.
First, the vehicle is
obviously readily mobile by
the turn of an ignition key,
if not actually moving.
Second, there is a reduced
expectation of privacy
stemming from its use as a
licensed motor vehicle
subject to a range of police
regulation inapplicable to a
fixed dwelling. At least in
these circumstances, the
overriding societal interests
in effective law
enforcement justify an
immediate search before
the vehicle and its
occupants become
unavailable.
24
While the Supreme Court did not
discuss the applicability of the mobile
conveyance exception to a motor home
that is “situated in a way or place that
objectively indicates that it is being used
as a residence,”
25
among the factors they
deemed relevant included the location of
the motor home; whether it was readily
mobile or elevated on blocks; whether it
was licensed; whether it was connected to
utilities; and whether it had convenient
access to a public road.
Two additional matters regarding
the mobile conveyance exception deserve
comment. First, there is no “exigency”
required to conduct a warrantless vehicle
search; all that is required is a mobile
conveyance and probable cause. Thus,
even if a law enforcement officer had the
24
Id. at 392-393 (footnote omitted)
25
Id. at 394 n.3
opportunity to obtain a warrant and failed
to do so, the search will still be valid if the
two requirements discussed above were
present. In Maryland v. Dyson,
26
a law
enforcement officer received a tip from a
reliable confidential informant that the
defendant would be returning to Maryland
later that day carrying drugs in a specific
vehicle with a specific license plate
number. This information gave the officer
probable cause to search the vehicle.
Approximately, 14 hours later, the
defendant’s vehicle was stopped as it
returned to Maryland. In upholding the
search, the Supreme Court cited to their
previous decisions in finding that “the
automobile exception does not have a
separate exigency requirement: ‘If a car is
readily mobile and probable cause exists
to believe it contains contraband, the
Fourth Amendment ... permits the police
to search the vehicle without more.’”
27
Second, once a law enforcement
officer has probable cause to search a
readily mobile vehicle, the search may be
conducted immediately or later at the
police station. “There is no requirement
that the warrantless search of a vehicle
occur contemporaneously with its lawful
seizure.”
28
In United States v. Johns,
29
the
Supreme Court upheld the warrantless
search of three packages that had been
seized from a vehicle three days earlier,
noting that “the justification to conduct
such a warrantless search does not vanish
once the car has been immobilized.”
30
Nonetheless, law enforcement officers
must act “reasonably” and may not
“indefinitely retain possession of a vehicle
26
527 U.S. 465
27
Id. at 466
28
United States v. Johns, 469 U.S. 478, 484
(1985)(citations omitted)
29
Id.
30
Id.
and its contents before they complete a
vehicle search.”
31
SCOPE
The scope of a search conducted
pursuant to the mobile conveyance
exception was laid out by the Supreme
Court in United States v. Ross.
32
There,
the Court stated:
We hold that the scope of
the warrantless search
authorized by [the mobile
conveyance] exception is
no broader and no narrower
than a magistrate could
legitimately authorize by
warrant. If probable cause
justifies the search of a
lawfully stopped vehicle, it
justifies the search of every
part of the vehicle and its
contents that may conceal
the object of the search.
33
It should be remembered, however,
that probable cause to search does not
automatically entitle a law enforcement
officer to search every part of a vehicle.
For example, where there is probable
cause to believe that a vehicle contains
drugs, a search of the glove compartment
would be permissible. Alternatively, if
there is probable cause that the vehicle
contains a large stolen television, a search
of the glove compartment would be
impermissible, in that the television could
not be concealed in that location. Any
mobile conveyance search is necessarily
limited by what it is the officers are
seeking in their search. In sum, if a search
warrant could authorize the officers to
31
Id. at 487
32
Supra, note 10
33
Id. at 825 (emphasis added)
search in a particular location, such as the
passenger compartment or trunk of the
vehicle, the officers may search there
without a warrant. A law enforcement
officer may also search locked or unlocked
containers located in the vehicle, if the
object of the search could be concealed
inside. The rule on containers appears to
be relatively straightforward.
Nonetheless, the issue of searching
containers located in a vehicle merits
additional discussion. As one
commentator has observed:
The Supreme Court has
faced profound difficulties
when reviewing warrantless
searches of closed
containers found in autos.
The Court has divided these
cases into two groups. In
the first group of cases,
police possess probable
cause to suspect that a
closed container in a
vehicle contains
incriminating evidence, but
lack probable cause to
suspect that any other part
of the auto holds such
evidence. In the second
group of cases, police have
probable cause to search
the entire auto and
unexpectedly stumble upon
a closed container.
34
In the first group of cases, the
Supreme Court’s decision in California v.
Acevedo
35
is controlling. In Acevedo, the
police had probable cause that a container
34
Steinberg, David E., The Drive Toward
Warrantless Auto Searches: Suggestions From a
Backseat Driver, 80 B.U.L.REV. 545, 550
(2000)(footnotes omitted)
35
California v. Acevedo, 500 U.S. 565 (1991)
placed in the trunk of a vehicle contained
marijuana. Believing they might lose the
evidence if they sought a search warrant,
the officers stopped the vehicle, opened
the trunk, and searched the container (a
paper bag). Marijuana was found inside
the bag. In finding the search of the paper
bag legal, the Supreme Court held that,
when law enforcement officers have
probable cause that a specific container
placed inside a vehicle has evidence of a
crime or contraband located inside of it,
they may search the container, locked or
unlocked, under the mobile conveyance
exception. However, the probable cause
relating to the container does not support a
general search of the vehicle. If the
officers wish to search the entire vehicle,
they must have some other justification to
do so, such as consent or a search incident
to arrest. As stated by the Supreme Court:
In the case before us, the
police had probable cause
to believe that the paper
bag in the automobile’s
trunk contained marijuana.
That probable cause now
allows a warrantless search
of the paper bag. The facts
... reveal that the police did
not have probable cause to
believe that contraband was
hidden in any other part of
the automobile and a search
of the entire vehicle would
have been without probable
cause and unreasonable
under the Fourth
Amendment.
36
In the second group of cases, law
enforcement officers have probable cause
to search the entire vehicle and discover a
closed container during their search.
36
Id. at 579
When this occurs, the officers may search
the container, whether locked or unlocked,
if what they are seeking could be
concealed inside of it. As noted by the
Supreme Court in Ross, supra:
The scope of a warrantless
search of an automobile ...
is not defined by the nature
of the container in which
contraband is secreted.
Rather, it is defined by the
object of the search and the
place in which there is
probable cause to believe
that it may be found.
37
Further, the rule of Ross has been
extended to include a passenger’s
belongings. In Wyoming v. Houghton,
38
the Supreme Court noted that “neither
Ross nor the historical evidence it relied
upon admits of a distinction among
packages or containers based on
ownership.”
39
Accordingly, “police
officers with probable cause to search a
car may inspect passengers’ belongings
found in the car capable of concealing the
object of the search.”
40
37
Ross, 456 U.S. at 824
38
526 U.S. 295 (1999)
39
Id. at 302
40
Id. at 307