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Vehicle interlock systems- An introduction and overview

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  1. Introduction.
  2. History of IID systems.
  3. Composition the technology piece.
  4. Various Interlock Systems used today.
  5. Possible ways to circumnavigate the system.
  6. General costs of the system.
  7. Vehicle Interlock Systems and the law.
  8. Is the program effective?
  9. Critics of IID systems.
  10. Concluding remarks.

Vehicle Interlock Systems, or ?Breathalyzer? are systems of alcohol-control installed into vehicles, with the purpose of prohibiting/controlling driver alcohol consumption. The goal of this invention was to reduce or eradicate the ability and/or frequency of drunk driving on the roads. A breath alcohol ignition interlock device (BIID or IID) is similar to a normal breathalyzer used by a law enforcer, but in this case it is installed onto a car's dashboard. Before starting the car, the driver must breathe into the device. If the analysis shows an amount over the legally admitted blood alcohol concentration (usually an amount of .02% or .04%) then the vehicle will not be able to start. This system is being used frequently in most states in the U.S. my mandate of the Federal Government.

[...] An Ohio study found a repeat offense rate lower for those using IID Based on the California pilot program, there is a 35 percent reduction in DWI repeat offenders, and from this it is estimated that there will be a reduction in demand for 175 prison beds and 1,400 jail beds. This could result in huge savings for the General Revenue Fund of the entire country as programs are implemented. Critics of IID systems There are also many criticisms of the IID system. [...]


[...] It also contains an open-ended configuration to thus assist fluid flow, and a mouth-piece projecting from the outer casing of the device to enable the user to exhale into an interior chamber. Most modern systems use an ethanol-specific fuel cell, (an electrochemical device where alcohol undergoes a chemical oxidation reaction which generates a subsequent electrical current) as the sensor device. This electrical current is what is then measured as an blood alcohol reading. This tends to be the most reliable BAC reading for the cost it imposes on the user. [...]


[...] These crashes killed 447 and injured an estimated 21,100 people. It is easy to see the climate in which a product such as an IDD was developed. For the past several decades, hundreds of safety experts have discussed the prospect of IID devices in an attempt to remedy the problem of drunk driving. In the 1970s and early 1980s, inventors, engineers and academicians were given the challenge of creating such a device. By the early 1980s, a few IID systems had been tested and implemented, and within these testing, there were two basic different types of IID systems. [...]

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