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Seat Belt Accident
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Most modern seat belts installed in the front passenger compartment of a vehicle are
equipped with
pretensioners.  Pretentioners are small pyrotechnic devices that deploy
when a vehicle is involved in a significant collision.  When deployed, pretensioners
help in eliminating any slack in
an occupant's seat belt by abruptly retracting.

In many cases, an indirect consequence of the deployment of pretensioners is the
locking of a seat belt in its last worn condition.  This allows accident reconstruction
experts the opportunity to opine on seat belt use.   Seat belt use, in turn, often helps
reconstructionists understand the mechanism of injury to an occupant.
The investigation of a traffic accident will often involve the examination of a vehicle's
restraint systems, including seat belts. Based on its condition post-impact, an expert
reconstructionist may be able to tell if a seatbelt was buckled or not at the time of a
crash.
Expert Seat Belt Examination
The National Highway Transportation Safety
Administration (NHTSA) tracks seat belt use and other
important statistics about traffic safety.  

To read the NHTSA 2008 publication on seat belt use,
click here.
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Disclaimer: Crash Data Services, LLC and crashdataservices.net provide the information in this web site for informational purposes only. The information is not intended to be legal advice or an expert
opinion and should not be construed as such.  The use of this site does not create a contractor/client relationship with any employee of Crash Data Services, LLC.   Each investigation is different. Case
results depend on a variety of factors unique to each case.  The results of any investigation/reconstruction do not guarantee or predict a similar result in any future case undertaken by Crash Data Services,
LLC
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