Which of the following is NOT a sign often associated with drunk driving?

Among the signs often associated with drunk driving, having the vehicle's emergency flashers on is generally not a behavior directly linked to impaired driving. Emergency flashers are commonly used by drivers in situations where there may be a need to indicate a vehicle is stationary or experiencing difficulty, such as a breakdown or when stopped in a hazardous location.

In contrast, driving without headlights becomes more common during nighttime or low-visibility conditions, which may indicate a lack of awareness or impaired judgment. Frequent lane changes can signal erratic driving and difficulty maintaining focus, both indicative of impaired control. Sudden stops may reflect a driver’s delayed reaction time or inability to gauge safe stopping distances, which are frequently seen in intoxicated drivers. Therefore, while all the other options indicate potentially dangerous driving behaviors, the use of emergency flashers does not inherently imply that a driver is under the influence.