This Mobile App Could Test Driver Impairment
This Mobile App Could Test Driver Impairment

When the police ask you to take a Breathalyzer test, it’s usually already too late. The damage — sometimes property damage, sometimes injury or loss of life — has already been done. But what if there were a way you could tell if you were impaired before you got behind the wheel? Well, there’s an app for that.

DRUID is one of a recent (and ever-growing) crop of phone-based applications that allow drivers to measure their level of impairment before they turn the key.

How It Works

DRUID, which was specifically formulated to measure impairment from marijuana, asks users to complete a series of cognitive and physical tasks while sober to establish a baseline performance score. Reaction time, decision making, hand-eye coordination, balance and time estimation are measured while the user’s attention is divided.

This score is then compared to …