Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cellular automaton model with dynamical 2D speed-gap relation reproduces
  empirical and experimental features of traffic flow   This paper proposes an improved cellular automaton traffic flow model based
on the brake light model, which takes into account that the desired time gap of
vehicles is remarkably larger than one second. Although the hypothetical steady
state of vehicles in the deterministic limit corresponds to a unique
relationship between speeds and gaps in the proposed model, the traffic states
of vehicles dynamically span a two-dimensional region in the plane of speed
versus gap, due to the various randomizations. It is shown that the model is
able to well reproduce (i) the free flow, synchronized flow, jam as well as the
transitions among the three phases; (ii) the evolution features of disturbances
and the spatiotemporal patterns in a car-following platoon; (iii) the empirical
time series of traffic speed obtained from NGSIM data. Therefore, we argue that
a model can potentially reproduce the empirical and experimental features of
traffic flow, provided that the traffic states are able to dynamically span a
2D speed-gap region.

37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol