Drunk Drivers Are 30 Times More Likely To Crash
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Alcohol impairs driving judgment, coordination and reactions. Don't drive to drink. And you'll never drink and drive.

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Did you know that even when you don't feel drunk, as long as there's alcohol in your body, it can affect your reaction time?

The human brain has to deal with many things and process countless data all the time. Alcohol affects attentiveness and one’s ability to make quick decisions on the road, react to changes in the environment and execute specific, often difficult manoeuvres behind the wheel.

Effect of alcohol on reaction times

Alcohol is water-soluble and is readily absorbed in the blood. More blood is supplied to the brain than to other organs, with the result that alcohol impairs your brain function within minutes.

Driving while either intoxicated or drunk is dangerous and drivers with high blood alcohol content are at greater risk of car accidents, injuries and even death

Studies have shown that blood alcohol content (BAC) levels as low as 0.04g/100ml can affect reaction times. Muscle coordination diminishes and a driver is more likely to respond incorrectly to stimuli.

Simple reaction times (where the subject attempts to detect a stimulus and respond as quickly as possible) appear to be less affected by lower BACs than do complex reaction times (where the subject must discriminate between stimuli and respond appropriately.)

The breathalyser will tell an officer whether someone is over the limit in just a few seconds

At a BAC of 0.08g/100ml (the allowable limit in Singapore), the reaction time of the average driver is approximately 276 milliseconds.

To put the numbers in perspective, the reaction time for fighter pilots is typically between 200 and 225 milliseconds, while that for a sober driver is around 250 milliseconds. 

So what does slower reaction time mean?

If your BAC is 0.08g/100ml, you are four times more likely to crash than if you are sober. At a BAC of 0.12g/100ml, the chances are 15 times more likely and at a BAC of 0.16g/100ml, the chances of crashing are 30 times more than if you are sober!

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