Which of the following describes the characteristics of visual cues in driving?

Visual cues in driving refer to the signs or indicators in the environment that inform a driver's actions and decisions on the road. Straddling lane lines and drifting is a behavior that often indicates a lack of attention or control, which can be assessed through visual cues.

When a driver is straddling lane lines, it suggests that their awareness of lane placements is impaired, possibly due to distractions, fatigue, or substance influence. Observers can often note this kind of behavior through visual monitoring from other vehicles or law enforcement, making it a critical visual cue for assessing a driver's capability to operate a vehicle safely.

Other options describe different patterns of driving behavior, such as changing speeds or lane maneuvers, but they do not directly pertain to visual cues in the same way. Straddling lane lines specifically reflects a visual cue that indicates potential impaired driving or a need for intervention.