When it comes to DUI stops in Massachusetts, law enforcement officers often rely on a series of field sobriety tests to determine if a driver is impaired. One of the most important tests used is the Horizontal Gaze Nystagmus (HGN) test. Understanding this test and its implications can greatly benefit individuals facing DUI charges.
What is the Horizontal Gaze Nystagmus Test?
The HGN test is a method used by police officers to detect involuntary jerking of the eyes, known as nystagmus, which can be an indicator of alcohol or drug impairment. During the test, the officer asks the driver to follow a moving object, such as a pen or flashlight, with their eyes. The officer then observes the driver’s eyes for any signs of nystagmus.
Why is the HGN Test Important?
The HGN test is considered one of the most reliable indicators of impairment due to its scientific basis. Research has shown that alcohol and certain drugs can cause nystagmus, making it a valuable tool for law enforcement officers to assess a driver’s level of impairment.
Understanding the HGN Test Procedure
It is crucial to understand the proper procedure followed during the HGN test to ensure accurate results. Here are the key steps involved:
- The officer positions the object approximately 12-15 inches from the driver’s face.
- The officer moves the object horizontally, smoothly, and at a consistent speed.
- The driver is instructed to keep their head still and follow the object with their eyes only.
- The officer checks for specific clues, such as the inability to smoothly track the object or the presence of nystagmus at maximum deviation.
Challenges and Potential Defenses
While the HGN test is widely used, it is not foolproof, and several challenges and potential defenses can be raised in court. Some common issues include:
- Improper administration of the test by the officer.
- Medical conditions or medications that can cause nystagmus, leading to false results.
- Environmental factors, such as bright lights or uneven surfaces, can affect the accuracy of the test.
Seek Professional Legal Assistance
If you have been charged with a DUI in Massachusetts and the HGN test was conducted during your arrest, it is crucial to seek professional legal assistance. At Geraghty Law LLC, we specialize in defending individuals facing DUI charges and have extensive experience in challenging field sobriety tests, including the HGN test.
Our team of skilled attorneys will thoroughly analyze the circumstances surrounding your arrest, including the administration of the HGN test, to build a strong defense strategy. We understand the complexities of Massachusetts DUI laws and will fight vigorously to protect your rights and achieve the best possible outcome for your case.
Contact Geraghty Law LLC today to schedule a consultation and discuss your case with our experienced criminal defense attorneys.