Do all passenger vehicles have an EDR unit?
Any vehicle with an airbag control module may have an EDR function, but at this time, only select General Motors and Ford manufactured vehicles have EDR units that permit data access and harvest by the public. While many more manufacturers have plans for public accessibility in the years to come, under a new federal law finalized in August of 2006, by the year 2011 (and most by 2010), all passenger vehicles sold in the United States that have an EDR function will be mandated to make the data recorded on their EDR units accessible to the public. Currently about one third of the vehicles on US highways today, have publicly retrievable EDR data.
