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According to the current handbook, the most frequently detected psychoactive substance among drivers is

A alcohol.

The researches indicate that alcohol is the most frequently detected substance among driving populations that causes fatalities and traffic arrests. [Marijuana; In Shape to Drive; Washington Driver Guide]

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4 years ago

Great app

Myles Blake High School

4 years ago

I only got 2 questions wrong

Tim de Bear

4 years ago

In the midst of finishing up learning on the older app, it told me to download this newer version. However, I didn’t want to have to go through all those questions again, so I simply finished reviewing on the old app and took the practice test on this newer app. Upon completion of the tests, it would not let me move forward or see my score! How should I know if I have done well enough to pass if I cannot see my own score?

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