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Traffic Accident Reconstruction

Harris Technical Services provides recognized, published and court qualified traffic accident reconstruction experts for the analysis of auto, motorcycle and pedestrian accidents. There is no charge or obligation for the initial file review and consultation.

Our experts are ready to travel on short notice. Our services are available to attorneys, insurance company representatives and commercial vehicle fleet operators.

The traffic accident experts at Harris Technical Services have provided expert testimony on seat belts, tire marks, sight distance, time and distance analysis, road geometry and signage, last chance to avoid a collision, human factors, lighting conditions, lamp examination to determine on or off in a collision, Event Data Recorders and GPS data records.

Event Data Recorderstmb

An EDR record, once created, must include specific information, over specified time frames, approximately 5 seconds, and at established resolution. Typical records include vehicle speed, throttle position, brake application, engine speed and velocity change through the collision. Some vehicles also record steering input angles.

Current List of Vehicles with an Event Data Recorder

EDRs do not record location, date or time, audio or video, however, many consumer grade automotive GPS units record significant information. This includes, speed, direction, time of day and date. GPS recorded data may extend over several months.

Contact Harris Technical Services for more information on recovering EDR and GPS data records.

Many auto manufacturers have installed EDRs in their vehicles voluntarily prior to the implementation of 49CFR563. These EDRs do not necessarily create records that are compliant with the federal regulation and there is no requirement that they be modified.

Not all models by these manufacturers have an EDR for all years. The type and amount of recorded data varies considerably. The conditions that must exist, air bag deployment or non-deployment, front, rear or side impact and/or rollover, to create a record also varies.