Investigation of DUI cases - Walk and Turn (WAT)

Walk and Turn (WAT) is a test walk. If administered properly, Wat is the 68% accuracy in determining the blood alcohol concentration (BAC) of 0.10%. To be administered correctly, the test on a sufficiently dry and hard, are carried out, and slip resistant surface. There should be a straight line are called. However, judges have the introduction of the results of this test where the test was not provided with a line. In this case, the legal defenseattack the weight of the evidence. If the subject is wearing heels above 2 inches, they should be allowed to remove their shoes to give.

Step one: the initial position and orientation of

First, the officer is directly the subject, one step after another along in a straight line with his right foot in front of the left, with the heel of your right foot touches the toes of the left foot. The subject is directed in this position untildirected to begin the test. It is not the behavior of this information, which is more often an "idea" that determine the poisoning is the result. For example, the theme of movement out of position, or before starting the test is required.

Step Two: Education and demonstration of Walk and Turn Test

The officer will demonstrate during the test, verbal instructions to take the test. The officer said that the argument in 9 steps heel-toe to take a ladderLine. The official shall instruct the subject on how to turn right was taken after the first 9 points. A right turn, taken a series of small steps, the officer shows. The subject must then another series of 9 to take steps heel-toe position. The officer must be kept under arms at his side to see how their feet, according to counts at all times, and every step. The issue is not to stop until the testcompleted.

The officer must ask if the subject is aware of the test before the test began.

Path

If the officer observes two or more clues, then there is a 68% chance that the person has a BAC above 0.10%. Evidence that the officer is looking for:

1. You can not keep balance while listening to instructions.

2. Begins before the instructions are finished.

3. Stop walking.

4. Do not touch heel to toe.

5. StepsLine.

6. Use arms to balance.

7. Improper turn.

8. Wrong number of steps.

Title

The original research on the application of WAT pointed out that these people were over 65 and people with back, leg or middle ear problems problems run the WAT. In this case, the defense argued that the weight of the evidence and should be considered in determining whether the subject was really drunk should be considered.

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