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Physical Evidence
ARCCA Pneumatic Cannon Test: Drinking Glass vs. Tail Light
ARCCA cannon tests firing a drinking glass at a taillight at 31 and 37 mph. The 37 mph test replicated the damage pattern on the subject taillight.
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The pneumatic-cannon testing supported the defense theory that a drinking-glass impact could produce the observed taillight damage; the 37 mph test produced a damage pattern the ARCCA analysis compared with the subject taillight.
Results of a physical reconstruction test conducted by ARCCA in which a drinking glass was fired at a tail light using a pneumatic cannon at 31 and 37 mph. The 37 mph test replicated the damage pattern observed on the subject tail light.