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Horizontal Gaze Nystagmus

Hi, I’m Keith Whiddon a DWI defense and criminal defense attorney in Louisiana.

One of the most frequently used field tests for driving while intoxicated is the Horizontal Gaze Nystagmus.

Unlike a vision test, the HGN looks for involuntary skips in vision as the driver follows a pen or light held by an officer. Often, these skips are not even caused by alcohol or other drugs but the can be exaggerated.

Although this test is 77% accurate in proving a Blood Alcohol content above .08, it is also one of the most difficult tests to properly administer, giving an experienced DWI attorney the opportunity to challenge the results.

If you have questions about the Horizontal Gaze Nystagmus Test or a DWI arrest, click the link to request your free copy of my book, Louisiana Drivers Guide to DWI.

Walk and Turn

Hi, I’m Keith Whiddon a DWI defense and criminal defense attorney in Louisiana.The Walk and Turn test tests a driver’s divided attention and determine if he or she can drive a vehicle safely. This test is only reliable if given on a dry, hard, level, and non-slippery surface with enough room to walk nine straight heel-to-toe steps. The driver is expected to count these steps as he or she walks, turns, and walk back along the line.

The test is divided between instruction and performance phase. The DWI officer gives instructions and demonstrates the walk and turn. The officer will then evaluate the driver’s ability to pay attention and follow the instructions correctly.

If you have questions about the Walk and Turn Test or a DWI arrest, click the link to request your free copy of my book, Louisiana Drivers Guide to DWI.

One Leg Stand

Hi, I’m Keith Whiddon a DWI defense and criminal defense attorney in Louisiana. The One Leg Stand tests a driver’s divided attention and ability to drive a vehicle safely. Like the Walk and Turn test, this is only reliable if the surface is dry, hard, level, and non-slippery. If the driver is wearing sandals or other loose shoes, they should be given the option to remove them. The driver is expected to stand on one leg and count seconds until told to stop.

Drivers who are over 65 years old, more than 50 pounds overweight, or have back, leg, or middle ear problems may have difficulty with the One Leg Stand test. If the driver is over 50 pounds overweight or more than 65 years old, the field sobriety tests and the officer’s credibility are subject to doubt.

If you have questions about the One Leg Stand Test or a DWI arrest, click the link to request your free copy of my book, Louisiana Drivers Guide to DWI.

Breath Test / Implied Consent

Hi, I’m Keith Whiddon a DWI defense and criminal defense attorney in Louisiana. If you have a Louisiana driver’s license, you’ve given what the law calls implied consent to chemical testing. By driving a motor vehicle on a public street or highway, you consent to be tested for any controlled dangerous substance, including alcohol.

If you consent to the breath test, and your blood alcohol is .08 or higher your driver’s license may be suspended. So take my advise and don’t blow it! If you have questions about the Breath Test, your driver’s license or a DWI arrest, click the link to request your free copy of my book, Louisiana Drivers Guide to DWI.