In State v. Cusack, 649 A.2d 16 (Me. 1994) the Law Court found driving 15 mph below the posted speed limit, repeated drifting, and the time of morning (3:00) did provide reasonable suspicion to justify a stop.
In State v. Pelleiter, 541 A.2d 1296 (Me. 1988) the Law Court found an officer's observance of the defendant crossing over the center line 3 times and drifting onto the shoulder once was sufficient to establish reasonable suspicion.
In State v. Carnevlale, 598 A.2d 746 (Me. 1991) reasonable suspicion was found when the police officer observed the driver make a slow weave onto the center line 3 times while fluctuating his speed between 35 and 40 mph in a 45 mph zone.