New York Driver License (DMV) Written Practice Test

A driver is considered "impaired" when their ability to operate a vehicle is negatively affected by substances that alter their mental or physical capabilities. This commonly includes a combination of alcohol and/or drugs, which can hinder a driver's judgment, reaction time, coordination, and overall ability to drive safely.

Being impaired means that the driver does not have full control over their faculties, which can lead to increased risk of accidents and violations of traffic laws. This concept is central to impaired driving laws, which aim to protect all road users by preventing individuals whose abilities are compromised by substance use from operating vehicles.

While excessive fatigue, lack of experience, and distracted driving can all contribute to unsafe driving conditions, they do not directly relate to the legal definition of impairment caused by drugs or alcohol. Therefore, the focus on combination substances like drugs and alcohol illustrates the most direct impact on driving performance, making it the correct determination of impairment.