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Book Description
This report presents the methodology and results of the independent evaluation of a prototype integrated crash warning system for light vehicles as part of the Integrated Vehicle-Based Safety Systems initiative of the United States Department of Transportation's Intelligent Transportation System program. The system integrates rear-end crash, curve-speed warning, lane change crash, and lane departure warning functions. The goals of the independent evaluation are to assess the safety impact, gauge driver acceptance, and characterize the capability of the integrated safety system. The evaluation is based on naturalistic driving data collected from a field operational test using 108 subjects who drove 16 passenger vehicles equipped with a prototype integrated safety system and a data acquisition system. The test subjects accumulated over 213,000 miles during a 12-month period throughout parts of southeast Michigan. For each driver, the test period was divided into a 12 day baseline condition with the system disabled and a 28 day treatment condition with the system enabled to compare the effect of the system on driving performance. The results of the analysis suggest that driving with the integrated safety system improves driver behavior and increases driver safety, that drivers feel that the system provides a safety benefit, and that the system alerts had a high degree of accuracy. This report delineates the methodology of the different analyses and discusses their results.
Book Description
This report presents the methodology and results of the independent evaluation of a prototype integrated crash warning system for light vehicles as part of the Integrated Vehicle-Based Safety Systems initiative of the United States Department of Transportation's Intelligent Transportation System program. The system integrates rear-end crash, curve-speed warning, lane change crash, and lane departure warning functions. The goals of the independent evaluation are to assess the safety impact, gauge driver acceptance, and characterize the capability of the integrated safety system. The evaluation is based on naturalistic driving data collected from a field operational test using 108 subjects who drove 16 passenger vehicles equipped with a prototype integrated safety system and a data acquisition system. The test subjects accumulated over 213,000 miles during a 12-month period throughout parts of southeast Michigan. For each driver, the test period was divided into a 12 day baseline condition with the system disabled and a 28 day treatment condition with the system enabled to compare the effect of the system on driving performance. The results of the analysis suggest that driving with the integrated safety system improves driver behavior and increases driver safety, that drivers feel that the system provides a safety benefit, and that the system alerts had a high degree of accuracy. This report delineates the methodology of the different analyses and discusses their results.
Author: Publisher: ISBN: Category : Driver assistance systems Languages : en Pages : 51
Book Description
The Integrated Vehicle-Based Safety Systems (IVBSS) program is a five-year, two-phase cooperative research program being conducted by an industry consortium led by the University of Michigan Transportation Research Institute (UMTRI). The goal of the program is to assess the safety benefits and driver acceptance associated with a prototype integrated crash warning system designed to address rearend, roadway departure, and lane change/merge crashes for light vehicles and heavy commercial trucks. This report describes accomplishments and progress made during the third year of the program (June 2008 to May 2009) and activities planned for the following year. Accomplishments detailed in this report include making refinements to the integrated crash warning system, conduct of additional verification testing and extended pilot tests, the analysis of data, and the construction of the fleet of 26 research vehicles.
Author: Wassim Najm Publisher: Createspace Independent Publishing Platform ISBN: Category : Technology & Engineering Languages : en Pages : 62
Book Description
This report identifies crash imminent test scenarios based on common pre-crash scenarios for integrated vehicle-based safety systems that alert the driver of a light vehicle or a heavy truck to an impending rear-end, lane change, or run-off-road crash. Pre-crash scenarios describe vehicle movements and critical events immediately prior to the crash. The General Estimates System (GES) crash database was queried to distinguish common pre-crash scenarios for light vehicles (2003 GES) and heavy trucks (2000-2003 GES) in terms of their frequency of occurrence. Analysis of two-vehicle rear-end crashes revealed four dominant scenarios that accounted for 97 percent of light-vehicle crashes and 95 percent of heavy-truck crashes in which the subject vehicle was striking. Four scenarios were also identified from an analysis of two-vehicle lane change crashes, comprising 65 percent of light-vehicle crashes and 76 percent of heavy-truck crashes in which the subject vehicle was encroaching onto another vehicle in adjacent lanes. There were five single-vehicle, run-off-road scenarios representing 63 percent of light-vehicle crashes and 83 percent of heavy-truck crashes, excluding crashes caused by vehicle failure or evasive maneuver. An additional set of scenarios is proposed to address multiple threats from near simultaneous critical events. This report also provides a statistical description of individual scenarios in terms of their environmental factors, roadway geometry, and speed conditions.
Book Description
"This report presents the methodology and results of the independent evaluation of a prototype integrated crash warning system for light vehicles as part of the Integrated Vehicle-Based Safety Systems initiative of the United States Department of Transportation's Intelligent Transportation System program. The system integrates rear-end crash, curve-speed warning, lane change crash, and lane departure warning functions. The goals of the independed evaluation are to assess the safety impact, gauge driver acceptance, and characterize the capability of the integrated safety system. The evaluation is based on naturalistic driving data collected from a field operational test using 108 subjects who drove 16 passenger vehicles equipped with a prototype integrated safety system and a data acquisition system. The test subjects accumulated over 213,000 miles during a 12-month period throughout parts of southeast Michigan. For each driver, the test period was divided into a 12 day baseline condition with the system disabled and a 28 day treatment condition with the system enabled to compare the effect of the system on driving performance. The results of the analysis suggest that driving with the integrated safety system improves driver behavior and increases driver safety, that drivers feel that the system provides a safety benefit, and that the system alerts had a high degree of accuracy. This report delineates the methodology of the different analyses and discusses their results."--Technical report documentation page.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The purpose of the Integrated Vehicle-Based Safety System (IVBSS) project is to evaluate the potential safety benefits and driver acceptance of an integrated set of crash-warning technologies installed on both heavy truck and light vehicle platforms. IVBSS is an integrated set of technologies that is intended to help the driver avoid road-departure, rear-end, and lane-change crashes by providing occasional crash alerts and advisories to enhance the driver’s awareness of the driving situation. This document proposes functional requirements for the system to be developed and field-tested on the heavy truck platform. These requirements are generated solely for the system created within this project, and are not intended to be prescriptive for integrated crash systems developed outside the project. The heavy truck platform encompasses class 8 trucks operating with one trailer or without a trailer. The IVBSS on the heavy truck platform addresses the following crash types: · Road departures due to unintended lateral drift, · Rear-end crashes, and· Lane-change and merge crashes due to unsafe lane movements by the heavy truck.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The purpose of the Integrated Vehicle-Based Safety System (IVBSS) project is to evaluate the potential safety benefits and driver acceptance of an integrated set of crash-warning technologies installed on both heavy truck and light vehicle platforms. IVBSS is an integrated set of technologies that is intended to help the driver avoid road-departure, rear-end, and lane-change crashes by providing occasional crash alerts and advisories to enhance the driver’s awareness of the driving situation. This document proposes functional requirements for the system to be developed and field-tested on the light vehicle platform. These requirements are generated solely for the system created within this project, and are not intended to be prescriptive for integrated crash systems developed outside the project. The light vehicle platform encompasses passenger vehicles including sedans, sport-utility vehicles, light trucks, minivans, and vans. The IVBSS on the light vehicle platform addresses the following crash types: • Road departures due to unintended lateral drift, • Road departures due to travel through curves at excessive speeds, • Rear-end crashes, and• Lane-change and merge crashes due to unsafe lane movements.
Author: Publisher: ISBN: Category : Motor vehicles Languages : en Pages : 46
Book Description
The purpose of the Integrated Vehicle-Based Safety System (IVBSS) project is to evaluate the potential safety benefits and driver acceptance of an integrated set of crash-warning technologies installed on both heavy truck and light vehicle platforms. IVBSS is an integrated set of technologies that is intended to help the driver avoid road-departure, rear-end, and lane-change crashes by providing occasional crash alerts and advisories to enhance the drivers awareness of the driving situation. This document proposes functional requirements for the system to be developed and field-tested on the light vehicle platform. These requirements are generated solely for the system created within this project, and are not intended to be prescriptive for integrated crash systems developed outside the project. The light vehicle platform encompasses passenger vehicles including sedans, sport-utility vehicles, light trucks, minivans, and vans. The IVBSS on the light vehicle platform addresses the following crash types: (1) Road departures due to unintended lateral drift, (2) Road departures due to travel through curves at excessive speeds, (3) Rear-end crashes, and (4) Lane-change and merge crashes due to unsafe lane movements.
Author: Publisher: ISBN: Category : Languages : en Pages : 118
Book Description
This document presents key findings from the light-vehicle field operational test conducted as part of the Integrated Vehicle-Based Safety Systems program. These findings are the result of analyses performed by the University of Michigan Transportation Research Institute to examine the effects of a prototype integrated crash warning system on driving behavior and driver acceptance. The light-vehicle platform included four integrated crash-warning subsystems (forward-crash, lateral-drift, lane-change/merge crash, and curve-speed warnings) installed on a fleet of 16 passenger cars and operated by 108 randomly-sampled drivers for a period of six weeks each. Each car was instrumented to capture detailed data on the driving environment, driver behavior, warning system activity, and vehicle kinematics. Data on driver acceptance was collected through a post-drive survey, debriefings and focus groups. Key findings indicate that use of the integrated crash warning system resulted in improvements in lane-keeping, fewer lane departures, and increased turn-signal use. The research also indicated that drivers were slightly more likely to maintain shorter headways with the integrated system. No negative behavioral adaptation effects were observed as a result of drivers' involvement in secondary task behaviors. Drivers generally accepted the integrated crash warning system and 72 percent of all drivers said they would like to have an integrated warning system in their personal vehicles. Drivers also reported that they found the blind-spot detection component of the lane-change/merge crash warning system to be the most useful and satisfying aspect of the integrated system.
Author: Emily Nodine
Author: Emily Nodine
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Author: Wassim Najm
Author: Emily Nodine
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