IVHS Countermeasures for Rear-End Collisions, Task 2 -- Functional Goals
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1996-05-01
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TRIS Online Accession Number:736807
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NTL Classification:NTL-SAFETY AND SECURITY-Highway Safety
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Abstract:The attached report is from the NHTSA sponsored program, "IVHS Countermeasures
for Rear-End Collisions," contract #DTNH22-93-C-07326. This program's primary
objective is the development of practical performance guidelines or
specifications for rear-end collision avoidance systems. The program consists
of three Phases: Phase one: "Laying the Foundation" (Tasks 1-4), Phase two:
"Understanding the state-of-the-art" (Tasks 5 & 6), and Phase three: "Testing
and Reporting" (Tasks 7-9). This work focuses on light vehicles only and
emphasizes autonomous in-vehicle-based equipment (as opposed to cooperative
infrastructure-based equipment.)
The results and conclusion presented in this interim report are preliminary in
nature. The Task 2 report "Functional Goals" presents the functional goals
developed for three basic types of rear-end collision avoidance and related
systems (Driver Warning System (DWS), Intelligent Cruise Control (ICC) System,
Automatic Control System (ACS)). In addition, the report presents the dynamic
situations relevant to the rear-end crash problem. These dynamic situations
allow the events leading to accidents, and accidents themselves, to be
subdivided into smaller groups that can be addressed invididually. To establish
the functional goals, a taxonomy of collision subsets and crash-related events
that provide a basis for identifying opportunities for intervention in the
sequence of events leading to a crash was developed. The functional goals
established for each of the system types is based on this taxonomy. The report
also established the terms and definitions as they relate to this program. This
is done to provide background into the rear-end collision avoidance problem and
to standardize on definitions and terminology.
THE RESULTS PRESENTED IN THIS REPORT ARE BASED ON A LIMITED AMOUNT OF WORK
CARRIED OUT WITH LIMITED INTERACTION WITH THE ACADEMIC, RESEARCH, AND INDUSTRY
COMMUNITIES. ANY CONCLUSIONS DRAWN FROM THE RESULTS PRESENTED MUST BEAR THIS
IN MIND.
Phase two goals include a detailed state-of-the-art review of technologies
related to rear-end collision avoidance systems and the design of a test bed
system(s). Phase two will finish in mid June 1996.
Phase three goals include the building and use of the test bed system, the
generation of the final performance guidelines or specifications, and the final
reporting on all aspects of the project. Phase three will finish in early
1998.
Work continues through Phase two and three to add to, and to refine, the
preliminary performance guidelines or specifications presented in the Task 4
report.
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