Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical capacity drop in a nonlinear stochastic traffic model   In this work, we show that the inverse-$\lambda$ shape in the fundamental
diagram of traffic flow can be produced dynamically by a simple nonlinear
mesoscopic model with stochastic noises. The proposed model is based on the
gas-kinetic theory of the traffic system. In our approach, the nonlinearity
leads to the coexistence of different traffic states. The scattering of the
data is thus attributed to the noise terms introduced in the stochastic
differential equations and the transition among the various traffic states.
Most importantly, the observed inverse-$\lambda$ shape and the associated
sudden jump of physical quantities arise due to the effect of stochastic noises
on the stability of the system. The model parameters are calibrated, and a
qualitative agreement is obtained between the data and the numerical
simulations.

33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ