What is a 'subjective test' for intoxication?

What is a 'subjective test' for intoxication?

Neil Shouse (Defense Attorney) gives expert video advice on: What is the legal definition of 'drunk driving'?; What is a 'DUI'?; What is a 'DWI'? and more...

In the Driving Under Influence context, a subjective test or subjective indicators of impairment primarily refers to the impression of the police officer. The officer sees how you're driving, sees how stable you are on your feet, how coherent you are, and how you do on your field sobriety test. Based on this, he forms a subjective impression, or an opinion as to whether or not you're intoxicated.