Pre-crash scenario framework for crash avoidance systems based on vehicle-to-vehicle communications
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2011-06-13
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Abstract:This paper prioritizes and statistically describes precrash
scenarios as a basis for the identification of
crash avoidance functions enhanced or enabled by
vehicle-to-vehicle (V2V) communication technology.
Pre-crash scenarios depict vehicle movements and
dynamics as well as the critical event immediately
prior to the crash. The prioritization of pre-crash
scenarios is based on the societal harm from persons
who were injured in pre-crash scenarios involving at
least two vehicles. The crash must also involve at
least one light vehicle (e.g., passenger car, van,
minivan, sport utility vehicle, or pickup truck) with a
gross vehicle weight rating less than 4,536 kg. This
paper also introduces a framework that serves to
connect pre-crash scenarios to crash avoidance
functions and provides information that will enable
the identification of appropriate functional
requirements, performance specifications, objective
test procedures, and initial system effectiveness
benchmarks. The framework incorporates crash
statistics about the driving environment, contributing
and causal factors, and kinematic information. In
addition, time-to-collision equations for each precrash
scenario are derived to identify key variables
that must be measured to recognize and assess the
crash threat of driving conflicts. Crash statistics are
obtained from national crash databases including the
2004-2008 General Estimates System, the National
Motor Vehicle Crash Causation Survey, and the
Event Data Recorder database. A set of ten pre-crash
scenarios are identified as a priority for the
development of V2V-based safety applications.
These priority scenarios are arranged into five crash
avoidance packages that consist of rear-end, lane
change, opposite direction, junction crossing, and left
turn across path/opposite direction crash
countermeasures. This paper delineates the priority
pre-crash scenarios and maps them to V2V-based
safety applications under development.
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