  In this paper, a parameterized deceleration parameter $q(z)= 1/2 - a/(1 +
z)^b$ is reconstructed from the latest type Ia supernovae gold dataset. It is
found out that the transition redshift from decelerated expansion to
accelerated expansion is at $z_T=0.35^{+0.14}_{-0.07}$ with $1\sigma$
confidence level in this parameterized deceleration parameter. And, the best
fit values of parameters in $1\sigma$ errors are $a=1.56^{+0.99}_{-0.55}$ and
$b=3.82^{+3.70}_{-2.27}$.
