What behavior is defined as weaving or straddling lane lines?

Weaving or straddling lane lines is characterized as a visual cue indicating problems with maintaining proper lane positions. This behavior often suggests that a driver is having difficulty controlling their vehicle, which can be caused by various factors such as distraction, impairment, or lack of attention. Observing such behavior is critical for law enforcement as it can signal potential unsafe driving conditions or even legal violations.

While drowsy driving, excessive speeding, or aggressive driving might lead to challenges in lane control, they are not the specific definitions of weaving or straddling lane lines. Hence, the most accurate characterization is that it serves as a visual indicator of lane position issues, which can prompt further investigation by officers on the road.