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Auto Black-Box Data Being Used In Court
DrEnter writes "Yahoo! is running this USAToday article about automobile electronic data recorder (EDR or "black-box") data being used in civil and criminal court cases. Most owners of cars so equipped don't know they have them, or that they can be used against them. The NHTSA has been investigating EDRs and is collecting public comments to determine if and how these devices should be regulated."
here
I'm not Seth.
Here's a response to a lot of questions people will have:
Which cars have it?
How long have cars had it?
Here's a lengthy explanation:
All cars released in the United States are OBDII compatible. This has been a federal mandate since 1998, although some carmakers decided to support OBDII in 1997 and some(including Toyota) had limited compliance in 1996. OBDII is an extension of OBDI, an earlier version of the standard. Carmakers were well aware that this law was coming, many thought ahead.
What is OBDII
It stands for Onboard Diagnostics, version two. It is a requirement for all cars mass produced(exemptions are issued, but it is for specialty manufacturers). It is a standard describing the diagnostics, logging, and interface to the Engine and Powertrain Controller Unit present in all fuel injected cars. Some of the parameters are always monitored, such as vehicle speed, air/fuel ratio, injector pulse lengths, rpm, gear(for automatics mostly), air flow meter/absolute manifold pressure meter, throttle/accelerator pedal position, and measured oxygen sensor output. There were minimums set for what a car had to monitor, but it is an extensible protocol and carmakers were free to extend it as much as they liked. Once the framework was there, extending it to include things like steering wheel position and brake pedal position/brake system pressure were easy. One of the minimums though, was that all cars had to maintain a 30 second rolling-log of all sensors and that as a minimum, the required sensor inputs had to be saved at the moment a sensor fault is detected. Hell, with the price of Flash memory these days, 30 minutes of logging was feasible. Many cars maintain a very detailed log of your driving activity.
So, in response, all new cars sold today have some form of limited logging, and many have very detailed logging. The only differences being what is logged, and for how long.
If you have any questions, just ask. Believe me, I know. It is my job to know.
You can't legislate goodness. Let each to his own destiny, by will of his freely made choices.