What behavior might suggest a driver is impaired?

The behavior of drifting in and out of the travel lane is a strong indicator that a driver may be impaired. This erratic movement can be attributed to a loss of motor control or attention, which are common effects of substances such as alcohol or drugs. Impaired drivers often struggle to maintain a consistent path on the road, making unintentional lane shifts or weaving patterns, suggesting a decreased ability to control their vehicle safely.

In contrast, driving with lights on at night is a responsible choice, as it enhances visibility. Turning excessively sharp corners may indicate aggressive driving but does not necessarily point to impairment, as it may simply reflect the driving style of an individual. Maintaining a constant speed typically indicates good control and attentiveness to driving conditions, which are qualities not usually associated with impairment. Understanding these differences helps in identifying potentially dangerous driving behaviors.