Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probabilistic Safety Analysis using Traffic Microscopic Simulation   Traffic microscopic simulation applications are a common tool in road
transportation analysis and several attempts to perform road safety assessments
have recently been carried out. However, these approaches often ignore causal
relationships between different levels of vehicle interactions and/or accident
types and they lack a physical representation of the accident phenomena itself.
In this paper, a new generic probabilistic safety assessment framework for
traffic microscopic simulation tools is proposed. The probability of a specific
accident occurring is estimated by an accident propensity function that
consists of a deterministic safety score component and a random component. The
formulation of the safety score depends on the type of occurrence, on detailed
vehicle interactions and maneuvers and on its representation in a simulation
environment. This generic model is applied to the case of an urban motorway and
specified to four types of outcomes: non-accident events and three types of
accidents in a nested structure: rear-end, lane-changing, and run-off-road
accidents. The model was estimated and validated using simulated microscopic
data. To obtained the consistent simulated data, a two-step simulation
calibration procedure was adopted: (1) using real trajectories collected on
site for detailed behavior representation; and (2) using aggregate data from
each event used in safety model estimation. The final estimated safety model is
able to identify and interpret several simulated vehicle interactions. The fact
that these outcomes were extracted from simulated analysis shows the real
potential of calibrated traffic microscopic simulation for detailed safety
assessments.

20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin