Car overturning Lateral
overturning (through a board) can occur at influence on the car of very
big lateral forces and the big factor of coupling of wheels to road, and also
at the big cross-section bias of road. Drift can precede overturning, at which
car утыкается wheels in a motionless obstacle. The probability of lateral overturning
depends also on width of a track of the car (the it more, the lateral stability
is better) and from an arrangement of the centre of weights of the car (the it
more low, the stability is better). Lateral overturning occurs at a great speed
on abrupt turn, at highly located centre of weights (that happens at the car to
heavy cargo in a luggage carrier on a roof), at the big cross-section bias of
road (on a slope) or at a combination of these factors is more often.
 Longitudinal
overturning through an axis of back wheels at cars practically is not
observed. Overturning through an axis of forward wheels can occur at sharp braking
(or утыкании in an obstacle) at movement to a great speed on abrupt descent. Most
possibly at movement with completely loaded luggage carrier on a roof.
Almost all domestic cars possess good stability and controllability, especially
at incomplete loading. The best in this plan are front-wheel which stability is
influenced a little also by degree of their loading. The most successful should
recognise VAZ-2109 having centre low located and displaced forward of weights
and insufficient turn.
Stability against lateral overturning at all cars with
the wheel formula 4х2 good as the track at them almost in 2 times is more than
height of the centre of weights. Overturning of such cars can occur only on a
slope to a bias more than 30 %.
 So, what
can and the driver should do as much as possible to improve stability and controllability
of the car?
First, carefully to watch a technical condition of
the car, especially behind serviceability of brakes, a steering, wheels, shock-absorbers.
To support recommended pressure of air in tyres, establishing in back wheels a
little increased pressure in comparison with lobbies.
Secondly,
not to overload the car, to place passengers on a forward seat, not to transport
heavy and large-sized cargo in a luggage carrier on a roof.
Thirdly,
not to suppose sharp driving, to reduce speed before turns, to create such mode
of movement at which arises as less as possible lateral forces, to avoid movement
on slippery roads.
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