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Identifying and preventing driver fatigue

Updated: 13 July 2011

Driver fatigue is one of the most mysterious causes of crashes. Unlike most causes, which are usually the actions, or inactions, of drivers, there is no reliable method for testing for fatigue impairment after a crash. Research has shown a person who has had no sleep for 24 hours will have a driving impairment equivalent to that of a person with a 0.05 percent blood alcohol concentration. The maximum permitted blood alcohol concentration level for driving in New Zealand for someone over 20 years old is 0.08 and for a person under 20 years of age, 0.03.

Identifying and preventing fatigue

Fatigue can affect anyone and is believed to be a contributing factor in at least 12 percent of motor vehicle crashes.

When you're fatigued, your judgement and decision making become badly affected and you react more slowly than you would normally. What's more, you're less able to judge how tired you are, which means you're even more at risk of falling asleep at the wheel. This can have fatal consequences.

Find out more about driver fatigue.

Being proactive about avoiding fatigue

The commercial road transport toolkit for drivers and operators identifies a number of steps you can take to prevent fatigue.

Limits on working hours also apply to drivers of trucks and vehicles operating in passenger services. Find out more.

Driver training

A number of training courses are available to help raise drivers' awareness of fatigue prevention techniques. For more information, contact Tranzqual, the training organisation for the road transport industry, or ACC.

Looking for more information?

Explore these resources for more information on fatigue, and strategies for prevention.

Stay alert!