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Title:

MAXIMUM DECELERATION AND JERK LEVELS THAT ALLOW RETENTION OF UNRESTRAINED, SEATED TRANSIT PASSENGERS

Accession Number:

00334186

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309031184

Abstract:

Three experiments performed to determine the maximum deceleration and associated rate of change of deceleration (jerk) that will allow the majority of potential users of automated guideway transportation systems to remain securely in their seats are described. In each experiment subjects representative of three anthropometric classes underwent various levels of deceleration and jerk. These experiments were performed in an instrumented vehicle controlled by an automated braking system. Seat sensors, movies, and subject ratings were employed to determine the deceleration at which subjects began to move off the set pan. Subjects were decelerated while seated normally, sideways, and forward facing but tilted backward (facing forward with the seat pan tilted back 3, 9, or 12 deg). Subjects underwent jerk levels of 0.25, 0.75, and 1.25 g/s while seated normally only. Jerk was found not to affect maximum deceleration levels. Modifications of features common to transit seating were found to increase retention. The maximum deceleration allowing retention was determined for both forward- and side-facing seated passengers. These results are discussed and presented in tabular and graphic form. (Author)

Supplemental Notes:

Publication of this paper sponsored by Committee on Ride Quality and Passenger Acceptance. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

Monograph Accession #:

01414350

Authors:

Abernethy, C N
Jacobs, H H
Plank, G R
Stoklosa, J H
Sussman, E D

Pagination:

pp 45-51

Publication Date:

1980

Serial:

Transportation Research Record

Issue Number: 774
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309031184

Media Type:

Print

Features:

Figures (4) ; References (13) ; Tables (3)

Old TRIS Terms:

Subject Areas:

Highways; Public Transportation; Railroads; Safety and Human Factors; Terminals and Facilities; Vehicles and Equipment; I83: Accidents and the Human Factor; I91: Vehicle Design and Safety

Files:

TRIS, TRB

Created Date:

Aug 15 1982 12:00AM

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