How did the OBD vehicle Interface come about

I'm not sure why but I added a page to cover the Background of the OBD bus. OBD stands for OnBoard Diagnostics and is used as an in-vehicle debug port. I guess I added it because I was up-dating a few OBD pages and got a little interested in the history.

Although reformatted much of the data is from the EPA's site [EPA sets the standard requirements], with some supporting data from a few state government sites..

The OBD interface makes that 'Service Engine Soon' light to come on in your car, the light that no one knows what it means.

I linked the new OBD page off the OBD Terms page. The main page relating to OBD is the Description of OBD listing.

Graphic; Dash Board Check Engine Light.