EVALUATION OF AN ACCELERATOR POSITION SIGNAL (ABRIDGMENT)
To introduce a new rear signal that will frequently light and at the same time often be of no relevance to a following driver is undesirable. It has already been demonstrated that the ability to detect coasting of vehicles can be accomplished by drivers fairly well by using "primary" cues such as the change in the headway gap or visual angle subtended by the vehicle. The only protentially useful information provided by a coasting signal would be to alert drivers to long coasting durations in the event that they are not detected by other means. For this reason, Mortimer suggested that a coasting signal only be presented when coasting durations exceed about 5 s because then the change in speed of the vehicle could be substantial and bring about high relative speeds and changes in headway. The findings of the current study have indicated scarely any benefits attributable to an APS, although they have indicated at least two important undesirable characteristics of it: (a) an increase in the frequency of accelerator releases by following car drivers; and (b) a frequently appearing signal on the rear of a vehicle that on most occasions provides no useful information to the drivers of following vehicles.
- Record URL:
- Summary URL:
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
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Supplemental Notes:
- Publication of this paper sponsored by Committee on Motorist Information Systems.. 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.
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Authors:
- Mortimer, Rudolf G
- Sturgis, Samuel P
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Conference:
- 55th Annual Meeting of the Transportation Research Board
- Location: Washington District of Columbia, United States
- Date: 1976-1-19 to 1976-1-23
- Publication Date: 1976
Media Info
- Media Type: Digital/other
- Features: References;
- Pagination: pp 33-35
- Monograph Title: Motorist information systems and services
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Serial:
- Transportation Research Record
- Issue Number: 600
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Accelerators (Devices); Car following; Evaluation; Following distance; Gap acceptance; Headways; Motor vehicles; Rear lighting; Speed; Traffic speed
- Old TRIS Terms: Accelerators; Following distance (Of vehicles); Rear signals
- Subject Areas: Highways; Safety and Human Factors;
Filing Info
- Accession Number: 00153132
- Record Type: Publication
- ISBN: 0309025699
- Files: TRIS, TRB
- Created Date: May 31 1977 12:00AM