An NHTSA study shows that the percentage of people involved in rollover
accidents was 21% in 2002, reflecting a 4% increase over 1994, 1995, and
1997. The average yearly percentage of incapacitating and fatal injuries
for restrained occupants was determined by analyzing the rollover data
obtained from the FARS query and was found to be 35%.
A rollover accident is where a vehicle turns over onto its side or roof.
The main cause for rolling over is turning too sharply while moving too
fast. When the combination of the force acting in the direction opposite
to the one it is turning is combined with gravity or g-force acting downwards
is applied to the center of vehicle’s mass falls outside of the
rectangle formed by the wheels, the vehicle starts to turn over.
Big vehicles such as such as 18-wheeler tractor-trailer trucks, commercial
vans, minivans, and conversion vans can easily rollover. The tendency
for a vehicle to rollover is dependent on the g-force required to roll
the vehicle. G-force is created when a vehicle negotiates corners.
The following chart illustrates the force required to rollover different
kinds of vehicles:
|Truck (Fully loaded)
||0.4 or lower
|Half empty tanker
It is almost impossible to generate the required force of 1.3 g for the
cars while turning around a corner, whereas it is easy to generate 0.4
g’s required to cause the trucks to rollover. It has been observed
that trucks can generate approximately 4 g’s from quick steering
maneuvers. A quick maneuver behind the wheel in an attempt to avoid collisions,
as well as cornering too fast can generate much larger g-force than the
required 0.4 g’s to cause the trucks to rollover.
Under special circumstances trucks can rollover at the speed as low as
5mph while negotiating a corner. Improperly loaded trailer may cause the
truck to rollover. If the truck leaves the road, in an instinctive reaction
the drivers usually attempt to return the vehicle back on track, many
times this causes truck rollovers. As a good practice the driver should
straighten out the vehicle and bring it to a stop, get out and evaluate
the situation. They should attempt to return the truck to the road as
slowly as possible only if it appears safe to do so. If you have any doubt,
call a tow truck to get you back on the road.
If you have been injured in a
contact Scarlett Law Group for a
free consultation to discuss your case with an expert.