Answer Posted / sandeep..appearing at 14july08

davis steering is most accurate one but due to short life
of it by frictional sliding link; alternate Ackermann
steering mechanism is used for same...while it is
theoritically correct for three conditions only. but
practical more realible & so widely used.

differential is used to prevent the slip of inner wheel
while taking a turn on road...to get better control at turn
& higher life of tyre and al dat.

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