Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The effect of mixture lenghts of vehicles on the traffic flow behavior
  in one-dimensional cellular automaton   The effect of mixture lengths of vehicles on the asymmetric exclusion model
is studied using numerical simulations for both open and periodic boundaries in
parallel dynamics. Densities are calculated as a function of the injecting
rates $\alpha1$ and $\alpha2$ of vehicles type 1 and type 2 respectively, and
the phase diagram ($\alpha1$,$\alpha2$) is presented for a fixed value of the
extracting rate $\beta$. In this case the first order transition from low to
high density phases occurs at $\alpha1+\alpha2=\beta$ and disappears for
$\alpha2>\beta$. While, in the case of one entry the gap which is a
characteristic of the first order transition vanishes with increasing $\alpha$
for n $\neq 0$.However, the first order transition between high and low
densities exhibit an end point above which the global density undergoes a
continuous passage. The end point coordinate depends strongly on the value of
n. In the periodic boundaries case, the presence of vehicles type2 in the chain
leads to a modification in the fundamental phase diagram (current, density).
Indeed, the maximal current value decreases with increasing the concentration
of vehicles type 2, and occurs at higher values of the global density in
contrast with what was found by Schadschneider et al \cite{20}.

19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs