Defendant Andrea Cusack appeals from an order of the Superior Court (York County, Brodrick, J.) affirming her conviction in the District Court (Biddeford, Janette, J.) for operating a motor vehicle while under the influence of intoxicating liquor in violation of 29 M.R.SA § 1312-B (Pamph.1993). Following the District Court’s denial of her motion to suppress, defendant entered a conditional plea of guilty. The sole issue on appeal is whether the District Court erred in finding that the arresting officer’s decision to make an investigatory stop of defendant’s vehicle was objectively reasonable. Finding no error, we affirm.
The facts presented at the suppression hearing are essentially undisputed. While on patrol duty on the Maine Turnpike just prior to 3:00 a.m. on June 14, 1992, an officer of the Maine State Police observed and followed defendant’s vehicle which was traveling at a steady speed of 50 m.p.h. The posted speed limit was 65 m.p.h. with a minimum speed of 45 m.p.h. The officer testified that in the course of slightly more than one mile, he observed the vehicle twice drift to the right and drive onto the fog line for a short distance, drive onto the fog line once for about one hundred feet, and cross over the fog line by about one foot and straddle the line for one hundred yards. He then stopped the vehicle and ultimately placed defendant under arrest.
Defendant testified and offered the explanation that she was driving below the posted speed limit because it was not her vehicle and she cannot see well at night. She stated that she moved to the right to try to encourage the vehicle following her to pass. She testified that she felt nervous and uncomfortable because of an incident involving a young lady that had happened on the turnpike, and because of stories she had heard about people pulling drivers over and impersonating police officers.
The District Court denied the motion to suppress and found that the officer was reasonably concerned that defendant was either operating under the influence, ill, or falling asleep. The Superior Court denied defen *18 dant’s appeal, and defendant filed a timely appeal to this Court.
Defendant argues that evidence gained as a result of the stop of her vehicle should have been suppressed because the officer’s suspicions were not objectively reasonable. She contends that her overall operation of the vehicle does not rise to the level of unusual or erratic driving that justifies a stop under recent Maine case law.
The Fourth Amendment to the United States Constitution and article 1, section 5 of the Maine Constitution protect individuals from unreasonable intrusions by police officers and other governmental agents.
State v. Nelson,
We review directly the District Court’s decision.
State v. Dean,
Defendant, however, urges this Court to apply instead an independent standard of review because she does not challenge the District Court’s findings of fact but rather contends that the District Court reached an erroneous legal conclusion as to the constitutional sufficiency of the factual basis to stop. “[W]hen a legal conclusion based on uncon-troverted facts is challenged, the judge’s ruling is independently reviewable on appeal.”
State v. Enggass,
We find no error in the court’s finding that the officer’s suspicion was objectively reasonable. There is no mechanical standard by which we review a court’s finding of reasonableness.
State v. Carnevale,
Defendant argues that her pulling over to encourage the vehicle behind her to pass was not unusual given the late hour, the fact that she was traveling on the turnpike, and given her concerns that night for her personal safety. She also argues that her 50 m.p.h. speed was steady and that the lack of fluctuation distinguishes this case from other recent Maine cases like
Carnevale,
The entry is:
Judgment affirmed.
All concurring.
Notes
.
See also State
v.
Hill,
. In
Pelletier,
we upheld a District Court's denial of a defendant's motion to suppress on facts showing that the police officer observed the defendant cross over the center line three times and drift onto the shoulder once.
.In
Camevale,
we upheld a District Court's denial of a defendant’s motion to suppress.
. In
Burnham,
a police officer stopped a vehicle after observing it weave back and forth about six times between the breakdown lane and the center line, although it did not cross either line.
