Alcohol continues to affect sleepiness related driving impairment, when breath alcohol levels have fallen to near-zero

Epidemiological findings point to very low blood alcohol levels heightening the risk of sleep‐related fatal road crashes. This was further assessed using a full sized interactive car simulator. Twenty, sleep restricted, healthy young men underwent a 2 h simulated afternoon monotonous drive, having previously consumed nil alcohol or 3 units >90 min previously, and having near‐zero breath alcohol (BrACs) at the start of the drive. In a repeated...