Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Determination of Interaction Potentials in Freeway Traffic from
  Steady-State Statistics   Many-particle simulations of vehicle interactions have been quite successful
in the qualitative reproduction of observed traffic patterns. However, the
assumed interactions could not be measured, as human interactions are hard to
quantify compared to interactions in physical and chemical systems. We show
that progress can be made by generalizing a method from equilibrium statistical
physics we learned from random matrix theory. It allows one to determine the
interaction potential via distributions of the netto distances s of vehicles.
Assuming power-law interactions, we find that driver behavior can be
approximated by a forwardly directed 1/s potential in congested traffic, while
interactions in free traffic are characterized by an exponent of approximately
4. This is relevant for traffic simulations and the assessment of telematic
systems.

28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
19
The categories of this paper are: eess
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph