Law Enforcement DWI Equipment and Technology

Law Enforcement DWI Equipment and Technology

The big part of Driving Under the Influence (DUI) and Driving While Impaired (DWI) charges occur when the driver commits a related traffic offense, such as failure to obey a traffic control device, speeding, reckless driving or negligent driving. Such an occurrence gives the Houston Police Department the lawful authority to stop the driver. Once this happens, the officer is trained to look for all the particular signs of alcohol consumption. If the officer suspects that you’re intoxicated, you can be arrested.

Mobile DWI Testing Labs

Biochemistry Labs on Wheels

Several checkpoints have a Breath Alcohol Test Mobile placed on-site which are usually fashioned out of motorhomes that have been equipped with breath testing devices which are intended to work as mobile police stations. Few states use roving Driving Under the Influence patrols in there anti-drunk-driving operations. Most law enforcement agencies use other types of DWI-intervention patrols in regions targeted for high rates of Driving Under the Influence arrests or that are notorious for a history of DWI-related auto accidents.

Several checkpoints have a Breath Alcohol Test Mobile placed on-site which are usually fashioned out of motorhomes that have been equipped with breath testing devices which are intended to work as mobile police stations. Few states use roving Driving Under the Influence patrols in there anti-drunk-driving operations. Most law enforcement agencies use other types of DWI-intervention patrols in regions targeted for high rates of Driving Under the Influence arrests or that are notorious for a history of DWI-related auto accidents.

During a sobriety checkpoint stop, the police officer must determine that there is articulable doubt of Driving Under the Influence to proceed with an arrest. To determine this, the officer can request that the motorist or driver provide a Preliminary Breath Test by using a Preliminary Breath Testing Instrument. A Preliminary Breath Test or a “PBT” is a portable device, which is intended to detect Blood Alcohol Concentration in the breath of the person breathing through the device.

How PBT Testing Works

In order for a PBT test to be initiated, the motorist or driver must blow for several seconds into this portable instrument through a tube, and it provides an instantaneous determination of Blood Alcohol Concentration.

If the device detects the presence of alcohol or controlled substances and the driver appears impaired, the officer will try to apply to the driver another series of tests called Standardized Field Sobriety Tests. In case these tests are done inefficiently, the officer will place the driver under arrest, to be moved to a breath alcohol testing place where the driver will be required to undergo a Breathalyzer Test.

Criminal Charges for DWI – and the Evidence

The outcomes of a Preliminary Breath Test are not acceptable in court as evidence of Driving Under the Influence and Driving While Intoxicated because they are often incorrect and misleading. They serve to provide law enforcement with supplementary objective information to establish probable cause for arrest and extra chemical testing. If you’re facing prosecution in Houston, TX for a criminal charge of this nature, then you need to consult with an experienced attorney for drunk driving cases.

As asserted above, Driving Under the Influence laws are enforced by the use of Standardized Field Sobriety Tests, performed from research sponsored by the National Highway Traffic Safety Administration.

These tests are used to achieve validated signs of impairment and to confirm probable cause for arrest. They are regulated and measured by law enforcement regularly and estimated in a standardized manner according to the answers of the driver.