PARTICIPANT PROFICIENCY EXAMINATION STANDARDIZED FIELD SOBRIETY TEST BATTERY

PARTICIPANT PROFICIENCY EXAMINATION

STANDARDIZED FIELD SOBRIETY TEST BATTERY

Participant Name: Date:

I. HORIZONTAL GAZE NYSTAGMUS

1. Remove eyeglasses.

2. Stimulus held in proper position (approximately 12”-15” from nose, just above

eye level).

3. Check for equal pupil size and look for resting nystagmus.

4. Check equal tracking.

5. Smooth movement from center of nose to maximum deviation in approximately 2

seconds and then back across the subject’s face to maximum deviation in right

and then back to center so that each movement takes approximately 2 seconds

to bring the eye from center to side. Check left eye, then right eye. (Repeat)

6. Eye held at maximum deviation for a minimum of 4 seconds (no white showing).

Check left eye, then right eye. (Repeat)

7. Eye moved slowly (approximately 4 seconds) from center to 45 degree angle.

Check left eye, then right eye. (Repeat)

8. Check for Vertical Gaze Nystagmus. Eyes held at maximum elevation for at

least 4 seconds. Check both eyes at the same time. (Repeat)

II. WALK AND TURN

1. Instructions given from a safe position.

2. Tells subject to place left foot on a line, then right foot in front of left foot touching

heel to toe with arms at sides and gives demonstration.

3. Tells subject not to begin walking until instructed to do so and asks if subject

understands.

4. Tells subject to take nine heel-to-toe steps on the line and demonstrates.

5. Explains and demonstrates turning procedure.

6. Tells subject to return on the line taking nine heel-to-toe steps.

HS 178 R5/13 15 of 15

7. Tells subject to count steps out loud.

8. Tells subject to look at feet while walking.

9. Tells subject not to raise arms from sides.

10. Tells subject not to stop walking until the test is completed.

11. Asks subject if all instructions are understood.

III. ONE LEG STAND

1. Instructions given from a safe position.

2. Tells subject to stand straight, place feet together, and hold arms at sides.

3. Tells subject not to begin test until instructed to do so and asks if subject

understands.

4. Tells subject to raise one leg, either leg, with the foot approximately 6” off the

ground, keeping raised foot parallel to the ground, and gives demonstration.

5. Tells subject to keep both legs straight and arms at sides and to look at elevated

foot.

6. Tells subject to count in the following manner: “one thousand one, one thousand

two, one thousand three” until told to stop, and gives demonstration.

7. Asks subject if all instructions are understood.

8. Checks actual time subject holds leg up. (Time for 30 seconds).

Instructor:

HS 178 R5/13 1 of 7 Source: DWI Detection and

Standardized Field

Sobriety Testing

March 2013 Edition