We call the hopping rates $p_j$ which are site-dependent properties *intrinsic parameters* which in the following will be considered as fixed, $p=1$ and $q=0.6$, if not stated otherwise. In contrast to this we consider the explicit dependence of the system properties on the *external parameters* $\alpha,\, \beta,\, \Omega_a$ and $\Omega_d$. Other driven lattice gases of the class characterized above can be written in the same way, while the local parameters might depend on the states in the vicinity of the sites and additional correlations might occur. Nonetheless one can assume that the TASEP/LK is quite universal as a paradigmatic model [@diplom].

In this work we are especially interested in randomly distributed defect sites. Here the *defect density* $\phi$, which is the probability that a given site is a defect site, serves as an additional system parameter. Hence, transition rates are distributed as $$p_j=\left\lbrace
\begin{array}{ll}
q & \quad \mbox{with probability } \phi \\
p & \quad \mbox{with probability } 1-\phi  
\end{array}
\right. \,\, .$$ Defect distributions of this kind are called *disordered* [^3]. The properties of such systems are not fully determined by the defect density $\phi$, but also depend on the spatial distribution of the defects. Since these properties can 