Choose Beats or Buzz? Sleepy Driving Strategies

ford by ryan mcguire

I
n a nutshell: caffeine helps keep sleepy drivers on the road. Music does too, but can be distracting.

These researchers have clearly never tried to do a hill-start with a scalding mug of Gold Blend clasped between their thighs.

That‘ll teach you clutch control.


Research has shown that drinking caffeinated beverages and listening to music are two popular fatigue-fighting measures that drivers take, but very few studies have tested the usefulness of those measures.

ford by ryan mcguireNew research to be presented at the HFES 2014 Annual Meeting in Chicago evaluates which method, if either, can successfully combat driver fatigue.

In their paper titled “Comparison of Caffeine and Music as Fatigue Countermeasures in Simulated Driving Tasks,” human factors/ergonomics researchers ShiXu Liu, Shengji Yao, and Allan Spence designed a simulated driving study that measured driver fatigue levels against the use of caffeine, music, or no stimulant. Twenty participants completed three 120-minute driving sessions over a three-day span at the same time each day, then scored their fatigue levels on a questionnaire.

drivers who used either caffeine

or music as a stimulant felt significantly

less tired than those who did not

Results indicated that drivers who used either caffeine or music as a stimulant felt significantly less tired than those who did not. The researchers noted, however, that those who drank a caffeinated beverage to stay awake performed their driving tasks much better than those who listened to music or those in the control group.

“Even though both caffeine and music keep drivers feeling more awake, caffeine also helps them maintain good driving performance,” said Liu, a graduate student in McMaster University’s Department of Mechanical Engineering. “Music, on the other hand, can distract drivers, which may explain why driving performance is not significantly improved when it is used as a fatigue countermeasure.”

Source: Human Factors and Ergonomics Society

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