Author: Frank D. Shepard
Publisher:
ISBN:
Category : Road markings
Languages : en
Pages : 30

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Book Description
Effectiveness at two interstate off-ramps.

Author: Frank D. Shepard
Publisher:
ISBN:
Category : Snowplows
Languages : en
Pages : 26

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Book Description
Recently completed research had proven the feasibility of using raised pavement markers to alert wrong-way drivers to their errors. In that research, however, the raised markers had been placed only in areas where-snowplowing was not a problem; therefore, the research described in the present report was undertaken to determine if problems would be encountered in adapting the system employing the raised markers to areas where snowplowing is prevalent. Based on the results of this research, it is believed that the method described for placing the raised pavement markers is effective in protecting them from damage by snowplows. The method of grooving allows the markers to be protected from damage and provides effective retroreflection for warning wrong-way drivers. It is recommended that the system of raised pavement markers placed as noted in this report be considered for placement at ramp areas or similar locations where wrong-way entries are a problem.

Author: F. D. Shepard
Publisher:
ISBN:
Category :
Languages : en
Pages : 19

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Book Description

Author: Frank D. Shepard
Publisher:
ISBN:
Category :
Languages : en
Pages : 13

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Book Description
The research reported here was undertaken to determine the feasibility of using raised pavement markers on interstate off-ramps in such a configuration that the driver will be alerted as a result of viewing an unexpected phenomenon. The results of this preliminary investigation show that the raised pavement marking system, consisting of a pattern of 45 markers, was effective in alerting drivers and would cause a wrong-way driver to realize his mistake according. Based on the results of this initial phase, it is recommended that the study be expanded by permanently placing raised markers at two or three interchange off-ramps for further study. It is anticipated that this recommendation will be implemented in the near future.

Author: Geni Brafman Bahar
Publisher: Transportation Research Board
ISBN: 0309087902
Category : Reflectors (Safety devices)
Languages : en
Pages : 71

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Book Description
"TRB's National Cooperative Highway Research Program (NCHRP) Report 518: Safety Evaluation of Permanent Raised Pavement Markers examines the safety performance of snowplowable permanent raised pavement markers on two-lane roadways and four-lane freeways"--Publisher's description.

Author: Iris J. Fullerton
Publisher:
ISBN:
Category : Road markings
Languages : en
Pages : 164

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Book Description

Author: United States. Department of Transportation
Publisher:
ISBN:
Category :
Languages : en
Pages : 754

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Book Description

Author: International Road Federation
Publisher:
ISBN:
Category : Highway research
Languages : en
Pages : 852

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Book Description

Author:
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 28

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Book Description

Author:
Publisher:
ISBN:
Category : Reflectors (Safety devices)
Languages : en
Pages : 72

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Book Description