Experts warn that nodding-off alarms offer false security

Commercial Motor
14/06/2004

Experts warn that nodding off alarms offer false security

Using driver fatigue alarms could be dangerous because they activate too late to prevent an accident, says a safety experty. Guy Sheppard reports.

Alarms designed to prevent drivers falling asleep at the wheel could actually increase the risk of an accident, a safety expert warns.

The research consultancy Awake says truckers should never use such devices because the alarms only go off when their head starts nodding: "By then you are already in a micro-sleep which lasts anything between 2 and 20 seconds so they won't stop you having an accident.

"There is also a danger that drivers will be tempted to use devices like these to help them stay on the road for longer, rather than taking a break."

Awake specialises in fatigue management and works closely with companies such as BP and Shell. Awake reports that driver tiredness is the biggest cause of road accidents in the petro-chemical industry.

"The important thing is to know the early warning signs of tiredness such as yawning and the feeling of restlessness. The best solution is to stop, have a couple of cups of coffee and then a 15-minute power nap."

One device currently on the market is Nap Zapper which fits behind the driver's ear and works on the principle of electronic balance to activate an alarm when the head nods forward.

Volvo has plans to introduce a similar system (CM 27 May).