POST POST - Peace Officer Standards and Training Traffic Law and Enforcement 2

Question 1

What blood alcohol concentration (BAC) level is the legal limit for non-commercial adult drivers in the United States?

Accepted Answer

0.08%

Answer

The legal BAC limit for non-commercial drivers age 21 and older is 0.08% in all U.S. states.

Question 2

What are the three NHTSA-standardized field sobriety tests (SFSTs)?

Accepted Answer

Horizontal gaze nystagmus, walk-and-turn, and one-leg stand

Answer

NHTSA recognizes the Horizontal Gaze Nystagmus (HGN), walk-and-turn, and one-leg stand as the three validated standardized field sobriety tests.

Question 3

Under California's implied consent law, what must a driver do when lawfully arrested for DUI?

Accepted Answer

Must submit to a chemical test of blood or breath

Answer

California's implied consent law requires drivers lawfully arrested for DUI to submit to a chemical test; refusal results in automatic license suspension.

Question 4

During an HGN (Horizontal Gaze Nystagmus) test, what is the officer observing?

Accepted Answer

Involuntary jerking of the eyes as they track a moving stimulus

Answer

HGN testing detects involuntary jerking (nystagmus) of the eyes as they follow a moving stimulus, which is associated with alcohol and certain drug impairment.

Question 5

A DUI suspect is unconscious and unable to consent to a blood draw; under what legal doctrine may an officer proceed without a warrant?

Accepted Answer

Exigent circumstances

Answer

Exigent circumstances — including a medical emergency or the natural dissipation of blood alcohol — may justify a warrantless blood draw.

POST - Peace Officer Standards and Training Practice Test

POST - Peace Officer Standards and Training Practice Test

POST POST - Peace Officer Standards and Training Traffic Law and Enforcement 2