Brake testing methodology study : driver effects testing

Johnston, S. A.; Tijerina, L. M.; Garrott, W. R.; Guenther, D. A.; Heydinger, Gary J.

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Brake testing methodology study : driver effects testing

1999-03-01
By Johnston, S. A. ; Tijerina, L. M. ; Garrott, W. R. ; ...

[PDF-2.14 MB]

English

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Creators:

Johnston, S. A. ; Tijerina, L. M. ; Garrott, W. R. ; Guenther, D. A. ; Heydinger, Gary J.

Johnston, S. A. ; Tijerina, L. M. ; Garrott, W. R. ; Guenther, D. A. ; Heydinger, Gary J. Less -
Corporate Contributors:

Vehicle Research and Test Center (U.S.) ; Transportation Research Center Inc ; Ohio State University ; United States. Department of Transportation. National Highway Traffic Safety Administration

Vehicle Research and Test Center (U.S.) ; Transportation Research Center Inc ; Ohio State University ; United States. Department of Transportation. National Highway Traffic Safety Administration Less -
Subject/TRT Terms:

[+]

ABS(Anti-lock Brake Systems) Antilock Brake Systems Brake Performance Brakes Brake Systems Brake Tests Braking Distance Data Analysis Driver Reaction Distance Drivers Human Factors Human Subject Testing Methodology Stopping Distance Stopping Distances Test Methods
Publication/ Report Number:

VRTC-87-0441 ; DOT HS 808 874

VRTC-87-0441 ; DOT HS 808 874 Less -
Resource Type:

Tech Report
Corporate Publisher:

United States. Department of Transportation. National Highway Traffic Safety Administration
Abstract:

The National Highway Traffic Safety Administration (NHTSA) is exploring the feasibility of developing brake tests to measure brake system performance of light vehicles. Developing test procedures requires controlling test variability so that measured differences between vehicles are more thamn just experimental noise. Possible sources of uncontrolled variability include environmental conditions, vehicle-to-vehicle differences for a given model, brake system changes with time, test driver differences, test surface friction changes with time, and test surface friction differences between test sites. The objective of this project was to determine the level of variability in stopping distance tests of light vehicles that is due to differences between drivers. 648 stopping distance tests were conducted with three expert drivers in three different cars on wet and dry asphalt with the ABS working and disabled. In conclusion, this test procedure measured differences between all three vehciles with very high statistical certainty. Unfortunately, this test procedure used a large number of replications and drivers. If the goal for a brake test program is only to distinguish large differences in braking performance, fewer replications and drivers would be needed for each vehicle tested.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

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urn:sha256:0250f326917e774f993844070e799cce182da073f1b9eab2ec6358ce0f0ec984
Download URL:

https://rosap.ntl.bts.gov/view/dot/15666/dot_15666_DS1.pdf
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Brake testing methodology study : driver effects testing

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