OPINION
Defendant Larry Jon Naisbitt appeals his conviction for unlawful possession of a controlled substance, a third-degree felony, in violation of Utah Code Ann. § 58-37-8(2)(a)(i) and (b)(ii) (Supp.1991). Defendant filed a pretrial motion to suppress evidence seized during a search of the vehicle he was driving. The trial court denied the motion and defendant pleaded guilty while reserving his right to appeal the district court’s denial of his motion to suppress. We affirm.
FACTS
The legal issues surrounding claimed violations of the Fourth Amendment’s search and seizure provisions are fact sensitive, and, accordingly, we recite the facts in detail.
State v. Carter,
After following the Laser for less than one mile, the trooper followed the Laser as it exited the interstate at the Yuba interchange. On reaching the end of the off ramp, the Laser turned onto an infrequently used dirt road. Regarding this as “possibly evasive behavior,” the trooper activated his lights and stopped the Laser. At the suppression hearing, defendant claimed he had been traveling for some time and decided to exit the interstate to get out and stretch and to let a pet cat out of the car.
Trooper Bushnell was met by defendant, the driver of the car, between the Laser and his car before the trooper could determine if the paper in the Laser’s back window was a valid temporary vehicle registration. The permit in the vehicle’s rear window turned out to be a valid Washington state temporary vehicle license.
The trooper asked defendant for his driver’s license and the vehicle’s registration information. Defendant was unable to produce a driver’s license, but indicated he had an Arizona license under the name Larry Jon Walker. A computer check indicated no Arizona license issued under that name. Defendant then reentered the Laser and asked the passenger, Sheri Tollefson, if she had any vehicle registration documents. She produced a purchase agreement, and the trooper verified the vehicle identification number listed on the agreement matched the number on the vehicle. The trooper then moved to the passenger side of the ear and spoke with Tollefson through the open car door. He asked Tol-lefson to identify the names listed on the purchase agreement, and she indicated the car belonged to her and her mother. Tol-lefson was unable to produce a driver’s license.
While speaking with Tollefson through the open door, Trooper Bushnell smelled an odor he believed to be burnt marijuana. Trooper Bushnell testified he recognized the odor from his police training. Defendant’s and Tollefson’s nervous and erratic behavior also raised Trooper Bushnell’s suspicions.
Based on the odor of burnt marijuana and defendant’s and Tollefson’s behavior, Trooper Bushnell asked defendant for permission to search the Laser. Defendant responded “fine” or “all right,” but that the trooper would have to ask Tollefson for permission, as it was her car. Trooper Bushnell asked Tollefson for her permission to search the vehicle, and she objected. Nevertheless, Trooper Bushnell proceeded with the search, found illicit drugs and paraphernalia, including a bag containing marijuana under the passenger seat, and arrested defendant and Tollefson.
We address two issues on appeal: (1) did Trooper Bushnell have reasonable suspi *971 cion to stop defendant’s vehicle? and (2) was Trooper Bushnell’s search of defendant’s vehicle constitutional under the plain view exception to the Fourth Amendment’s warrant requirement? 1
In reviewing a denial of a motion to suppress, this court will not disturb the trial court’s findings of fact unless they are clearly erroneous.
State v. Steward,
LEGALITY OF STOP
Defendant first argues Trooper Bushnell “had no probable cause or other legal reason to stop [his] motor vehicle.” A law enforcement officer may stop a motor vehicle if the officer has a reasonable suspicion the vehicle is being operated in violation of motor vehicle registration laws.
Delaware v. Prouse,
The trial court found the vehicle’s lack of license plates and the trooper’s inability to identify the paper in the vehicle’s back window as a valid temporary registration permit justified the stop of the vehicle. The court concluded this constituted reasonable suspicion the car was not properly registered. We agree.
2
Trooper Bushnell’s inability to determine whether the vehicle was properly licensed justified the stop.
Cole,
LEGALITY OF SEARCH OF NAISBITT’S VEHICLE
Defendant next claims Trooper Bushnell’s search of the vehicle violated the Fourth Amendment. At the hearing on the motion to suppress, the State justified the search of defendant’s vehicle on alternative grounds: that defendant consented to the search and that Trooper Bushnell had probable cause to conduct the search. The trial court found defendant had voluntarily consented to the search and, therefore, denied the motion to suppress evidence found during that search. Although we are troubled by the determination that defendant voluntarily consented to the search, 4 we affirm the trial court’s denial *972 of defendant’s motion to suppress on grounds the search was justified by Trooper Bushnell smelling marijuana.
Defendant challenges Trooper Bushnell’s search under the Fourth Amendment. A search and seizure conducted without a warrant, like the search of defendant’s vehicle, “is unreasonable per se unless it falls within a recognized exception to the warrant requirement of the fourth amendment.”
State v. Bartley,
Under federal law, the odor of marijuana gives an officer justification to search a vehicle, even absent a warrant or some other exception to the warrant requirement, such as consent. The United States Court of Appeals for the Tenth Circuit recently noted this general rule: “This court has long recognized that marijuana has a distinct smell and^hat the odor of marijuana alone can satisfy the probable cause requirement to search a vehicle or baggage.”
United States v. Morin,
The United States Supreme Court has noted the odor of marijuana can justify a warrantless search of the vehicle. In
Robbins v. California,
Utah courts have also applied the “plain smell” doctrine under the Fourth Amendment. In Bartley, this court noted: “Objects in ‘plain view’ constitute one ... exception [to the warrant requirement], and may be seized without a warrant if the police officer is lawfully present and the evidence is clearly incriminating. This exception encompasses evidence within ‘plain smell’.... ” Id. at 1235 (citations omitted) (based on this rule, the court held an odor of drip gas apparent to police officers justified a search of the vehicle).
Given this well-established rule of federal 7 constitutional law, it was not error for the trial court to deny defendant’s motion to suppress. Trooper Bushnell testified he recognized the odor based on his police training. Trooper Bushnell did not search the vehicle until he smelled the marijuana, and he smelled the marijuana while trying to determine the ownership of the vehicle and identity of its occupants. Given this evidence, the trial court did not err in denying defendant’s motion to suppress the evidence found as a result of that search. 8
The trial court’s denial of defendant’s motion to suppress is affirmed.
JACKSON and RUSSON, JJ., concur.
Notes
. Defendant also challenges the trial court’s finding that he consented to the search of the vehicle. Because of our resolution of the plain view issue, we need not reach the consent issue.
. Defendant makes no argument the scope of detention after the traffic stop was unreasonable; thus, we do not consider that issue.
. Defendant’s reliance on
State
v.
Arroyo,
Moreover, this case is distinguishable from
State v. Baird,
.Both Trooper Bushnell and defendant testified defendant told the trooper a search of the vehicle was "fine" or "all right” with him, but the trooper would have to check with Tollefson as it was her vehicle. Thus, it is not clear defendant consented to the search, when, in fact, Tollefson subsequently refused to consent to the trooper’s search of the vehicle. These facts allow for the equally valid conclusion that defendant consented to the search only if Tollefson likewise gave her consent. Such conditional consent would not necessarily meet the Fourth Amendment's requirement of consent in fact.
See Schneckloth
v.
Bustamonte,
.
See also United States v. Loucks,
. The United States Court of Appeals for the Seventh Circuit has held that a search following an officer’s detection of the odor of marijuana is justified under the vehicle exception to the warrant requirement.
United States v. Powell,
. Defendant does not challenge the search under Article I, Section 14 of the Utah Constitution. We, therefore, are precluded from analyzing the search under the Utah Constitution.
See State v. Belgard,
We note, however, the standard required by the Utah Constitution may not parallel the federal standard. Recently, in considering the automobile exception to the warrant requirement, the Utah Supreme Court disagreed with federal decisions holding no showing of exigent circumstances is necessary to search a vehicle without a warrant.
See, e.g., Carney,
We are troubled that when existing law demonstrates a difference between federal and state law, parties fail even to mention, much less brief, state constitutional issues. Until and unless parties brief search and seizure questions under the state constitution, Utah’s citizens will remain at the mercy of the "labyrinth of rules built upon a series of contradictory and confusing rationalizations and distinctions” marking federal search and seizure law. State v. Hygh, 711 P.2d 264, 271-72 (Utah 1985) (Zimmerman, J., concurring).
. We make no statement as to whether our decision would be the same if Trooper Bushnell’s search had not, in fact, found marijuana in the vehicle.
Cf. Arroyo,
