CIRRUAS

Case Study

Elbert County Sheriff logo

Comanche Creek – Vehicle Roll Over

Date
Equipment
PIC
Image Count
Area Size
Pixel Resolution
5/17/2017
DJI Phantom 4
Lieutenant Patrick Cillo
261
11.9 Acres
Native 2.6cm/Pixel

Accident Abstract

On Wednesday May 17th at approximately 3:45 pm the operator of a motor vehicle heading east bound was involved in a high speed roll over collision near Kiowa, Colorado. Elbert County Sheriff’s deputies and EMS staff arrived on scene to find the individual involved in the roll over suffering with significant injuries and was immediately transported to a local hospital.  An accident reconstruction yielded an initial speed of the vehicle at 70-74 mph. Posted speed of 40 mph.  Total out of control side slip marks on the road surface were 424 feet in length, measured with an LTI laser and confirmed later with drone software containing dimensional properties.

Accident Abstract

Data Acquisition

A DJI Phantom 4 was deployed with a pre-programmed autonomous flight pattern to collect evidence at the scene.  The flight elevation was set at 150 ft and the collection time was 18 min. The high-resolution photographs and 3-D model displayed the complete skid pattern, debris field, vaulting location and final resting location of the vehicle.  This information was used in the accident reconstruction models to determine the speed of the vehicle at the onset of becoming out of control.

The 3-D model also provided the benefit of context displaying the effect of the slope and 45 degree right hand roadway turn the operator encountered.

data acquisition 1
data acquisition 2
data acquisition 3

Conclusion

After an incident, the goal and responsibility of law enforcement is to document in extensive detail all potentially critically valuable information on site.  The CIRRUAS program provides all the Hardware, Software and Training to accomplish this goal.  The time savings are a significant benefit to the field personnel at the scene.  The rapid deployment and collection of geo referenced images ensure that all critical data is collected and is easily accessed by law enforcement, judicial and additional entities.

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