Aрpellant, Lorando John Duncan, was convicted of possession of heroin in violation of D.C.Code § 33-541(d) (1988). He appeals his conviction on the principal ground that the trial court erred in denying his motion to suppress evidence that was discovered, in a search incident to his arrest, after he was stopped at a police traffic roadblock. Following the denial of his motion to suppress evidence and his conviction and sentencing for the drug offense, appellant filed a timely notice of appeal. Thereafter, he filed a motion for a new trial, which the trial court denied. Appellant then noted an apрeal from the trial court’s order denying his motion for a new trial. Both appeals have been consolidated for all purposes.
Appellant contends that the trial court’s finding that the principal purpose of the roadblock was to check for drivers’ licenses and vehicle registrations was clearly errоneous. Thus, he argues that the roadblock was unconstitutional and the evidence seized should have been suppressed. 1 We hold that the trial court’s finding was not clearly erroneous or without evidence to support it. Accordingly, we affirm.
I.
The uncontroverted testimony at the suppression hearing was as follows: At apprоximately 11:00 p.m. on October 24, 1990, forty uniformed members of the Metropoli *2 tan Police Department’s Rapid Deployment Unit set up a roadblock at Ninth and 0 Streets, Northwest, to stop all cars traveling north or south on Ninth Street. Every vehicle passing through the intersection was stopped by one of the officers who asked eаch driver to produce a driver’s license and vehicle registration. The drivers who produced valid drivers’ licenses and registrations were permitted to leave. If, however, a driver could not produce a valid license and registration, and a computer check did not confirm a valid license and registration, then thе driver was arrested. The procedures for, and location of, the roadblock were selected in advance by the unit’s commander. Several officials were at the scene to supervise the enforcement of the roadblock.
Shortly after the roadblock was set up, Detective James Flynn, the government’s sole witness at the suppression hearing, stopped appellant’s car. After advising appellant that the police were conducting a roadblock, he asked appellant for his driver’s license and vehicle registration. Flynn testified that appellant became “visibly upset” and acted as though he was sеarching his glove compartment for the license and registration. When appellant stated that he thought the license and registration were in the trunk, Flynn asked appellant to step out of the car so that appellant could search the trunk. According to Flynn, appellant appeared to search thе trunk for a few minutes and then stated to the officer: “I’ll tell you the truth, I don’t have a driver’s license.” Flynn then arrested appellant for the traffic violation, and a computer check indicated that appellant’s license had been suspended. A subsequent search of appellant resulted in the seizure of six packеts of a white powder that was subsequently analyzed to be heroin. Appellant then filed a motion to suppress the evidence, the denial of which is the principal basis for this appeal.
According to Flynn, 2 the purpose of the roadblock was “to ascertain if the drivers stopped had a driver’s license and registration for the vehicles, if they were suspended, drunk drivers, wanted drivers and to deter the drug trafficking in the area.” Flynn testified the area was known to be a high drug trafficking area with particularly heavy vehicular traffic. He testified that police have found a high incidence of suspended and wanted drivers in high narcotics areas.
Defense counsel argued
3
that the roadblock wаs unconstitutional because there were no written instructions for the roadblock and there was no showing that the roadblock had been set up pursuant to established procedures. The government maintained that legal precedent did not mandate written orders for such roadblocks. Moreover, relying on the decisions in
Delaware v. Prouse,
II.
The trial court denied appellant’s suppression motion and ruled that pursuant to the decisions in
United States v. McFayden, supra,
and
Delaware v. Prouse, supra,
the roadblock was lawful. At the
*3
time of the trial court’s ruling, however, this court had not decided the appeals in
Galberth v. United States,
Pursuant to our remand ruling in Galberth, supra note 4, we granted the government’s motion to remand the record in the present case for the trial court to make further factual findings as to the principal purpose of the roadblock.
III.
Following our remand, the trial court credited the testimony of Detective Flynn and made thе following supplemental factual findings (“Findings”) in support of its ruling denying appellant’s suppression motion:
Every vehicle passing through the intersection was stopped by a uniformed officer and each driver [was] asked to produce his or her driver’s license and vehicle registration. The procedures and location of thе roadblock were selected in advance by the unit’s commander and several officials were at the scene to supervise the enforcement of the roadblock.
Findings at 2.
In addressing the principal purpose of the roadblock, the trial court made the following ruling:
The principal purpose of the roadblock conducted here was the same purpose identified in United States v. McFayden,275 U.S.App.D.C. 207 , [865 F.2d 1306 ], that is, the roadblock was set up to check for driver’s [sic] licenses and vehicle registrations. Testimony from Detective James Flynn explained that the police have found that there is a high incidence of drivers without licenses, drivers with suspended licenses, and drivers for whom there are outstanding warrants in high narcotics areas. The police set up roadblocks in open air drug markets to identify and weed out the unlicensed and wanted drivers. Engaging in this lawful police activity, see Delaware v. Prouse,440 U.S. 64 [8], 658 [99 S.Ct. 1391 , 1398,59 L.Ed.2d 660 ] (1979), has the desired “spin-off” effect of discouraging drug users and traffickers from frequenting *4 the area which in turn alleviates the traffic congestion.
Findings at 2-3 (citations omitted) (footnote omitted) (emphasis added).
IV.
This court has previously held that the trial court’s finding as to the purpose of a roadblock is a question of fact, which we will review for clear error.
Galberth, supra,
Appellant is not challenging the legality of roadblocks that have the principal purpose of checking the validity of drivers’ licenses and vehicle registrations. He concedes that a roadblock is constitutional where the principal purpose is to allow police to check drivers’ licenses and vehicle registrations.
See McFayden, supra,
The trial court credited Detective Flynn’s testimony that the two main purposes of the roadblock were to check for valid drivers’ licenses and registrations and to check for drunk drivеrs. Both purposes have been held to be lawful justification for police roadblocks.
See McFayden, supra,
Although Flynn testified that
one
purpose of the roadblock was to deter drug trafficking, and that he told Duncan that
*5
“the police were conducting a road block for drug trafficking in the аrea,”
6
he also testified that deterring drug trafficking was
not
a principal purpose of the roadblock. In this regard, the trial court credited his testimony and found that deterring drug trafficking was not a principal purpose of the roadblock but, rather, a constitutional “benefit from the ‘spin-off effect’ of an otherwise constitutional law enforcement program.”
Galberth, supra,
We, likewise, find unpersuasive appellant’s contention that the roadblock could not have been “neutrally set at this plaсe to review licensure.” Our decision in
Galberth, supra,
Accordingly, the judgments appealed from are hereby
Affirmed.
Notes
. In the trial court, appellant also maintained that his statement that he did not have a driver’s license did not give the police probable cause to arrest him before the results from a WALES computer check disclosed that appellant’s license had been suspended. This argument was abandoned on appeal.
. Flynn testified that he was a sixteen-year veteran with the Metropolitan Police Department who had participated in more than fifty roadblocks.
. The defense offered no evidence.
. The
Galberth
and
Taylor
cases were consolidated originally.
See Galberth, supra,
. The
Galbertk
court also recognized that "[i]f the principal purpose of the roadblock were to check drivers' licenses and vehicle registration[s], we would conclude that the roadblock was constitutional."
Galberth, supra,
. Flynn’s "on the spot” reference to deterring drug trafficking as a purpose of the roadblock is troubling, for an unrehearsed statement made without litigation in mind often has a ring of truth.
Cf., e.g., Harris v. United States,
. We also reject appellant's contention that the government had the burden of producing written instructions for the roadblock and should have produced the chief of police оr the commander of the unit to testify about the roadblock procedures. Defense counsel never objected to Flynn’s basis for his knowledge about the roadblock procedures, purposes, location, time, etc. Moreover, Flynn testified about his participation in over fifty roadblocks that were proсedurally similar to the roadblock in the present case. He also testified that he received his instructions from his supervisors who were also present to ensure that the procedures were followed. Accordingly, the evidence was sufficient to support a finding that the roadblock was set up pursuant to established guidelines.
