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About Car Breathalyzers and Ignition Interlock Systems

By Edited Feb 11, 2014 1 0

State laws, such as those in Missouri, are becoming more harsh regarding DUI and DWI offenses and are more likely to require in car breathalyzer or ignition interlock system, particularly for second offenders. Breathalizers for vehicles can also be used for personal and business purposes. Many parents, employers, or even school districts may be benefit from private breathalyzers that only enable a vehicle to run once the breathalyzer receives a sample with alcohol content below that set in the machine.

What is a Car Breathalyzer?
An in car breathalyzer or ignition interlock system is a device that is installed in a vehicle that prohibits a car from being started by a driver that has a blood-alcohol content above a limit set into the breathalyzer. The driver is required to blow into a mouthpiece, the breathalyzer will register the amount of alcohol in the breath as an indicator of the driver's blood alcohol content and will disable the ignition of the car if it exceeds the given limit.

Using a Breathalyzer Due to Court Order
The best advice here is to follow the court order, or other government agency's instructions precisely. Further, do not attempt to trick the breathalyzer. Some ignition interlocks will require a test before starting the car and while the car is driving. If the breathalyzer is failed while the vehicle is in motion a car alarm will go off and will not stop until the car comes to a halt. This will bring much unwanted attention to the vehicle and will often, as planned, result in further negative legal repercussions.

Private In Car Breathalyzers
There is much greater flexibility in the type of breathalyzer available for parents, private companies, or government agencies that are thinking of using in car breathalyzers. And, with a greater variety of models available comes a greater difference in prices. Auto breathalyzers range from a few hundred dollars to over $1000. There will also be instillation fees and the cost of providing replacement mouth pieces.

You'll also want to consider what alcohol limit, if programmable, that will disallow the ignition system. In most states it is illegal to drive with a blood alcohol content of over .08. However, many in car breathalyzers are set at a much lower level. It is important to also remember that a test on a private breathalyzer will not get you out of a DUI or DWI based on its reading.

Other features to consider are access to any recordings the breathalyzer may produce, the ease of maintenance, and whether any alarms are set off when the breathalyzer test is failed.



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