TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

PARTIAL LIGHTING OF INTERCHANGES

Accession Number:

00371694

Record Type:

Monograph

Availability:

Find a library where document is available


Order URL: http://worldcat.org/issn/00775614

Abstract:

This study was designed to determine the effectiveness of partial lighting (lighting that consists of a few luminaires located in the general areas where entrance and exit ramps connect with the through traffic lanes of the freeway) of interchanges and to develop recommendations for its use. This study concentrated on the benefits of lighting rather than on the costs, and crossroad lighting at the ramp terminals was not included. The study included a literature review, a questionnaire survey and analyses to isolate reasons for selecting or rejecting specific types of lighting and interchange designs, the variation of lighting warrants, and the availability of accident and traffic operational data and the results of analyses of the effectiveness of interchange lighting and traffic operations. The study found that 37% of the interchange lighting is complete interchange lighting (CIL) and 63% is partial interchange lighting (PIL). The study concluded that (1) CIL performs better than PIL to systems consisting of 1, 2, or 4 luminaires; (2) either CIL or PIL performs better than no lighting; (3) PILs with fewer luminaires one or two perform better than PILs with more luminaires (four); (4) there is a tradeoff between cost and traffic operations and safety factors in the design of freeway interchange lighting; and (5) existing CIL systems should not be reduced to PIL systems if traffic operations and safety (defined in terms of driver behavior measures) are important considerations.

Supplemental Notes:

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.

Report/Paper Numbers:

HS-035 194

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Janoff, M S
Freedman, M
Decina, L E

Pagination:

81 p.

Publication Date:

1982-12

Serial:

NCHRP Report

Issue Number: 256
Publisher: Transportation Research Board
ISSN: 0077-5614

Media Type:

Digital/other

Features:

Figures; References; Tables

Uncontrolled Terms:

Effectiveness

Old TRIS Terms:

Subject Areas:

Highways; Operations and Traffic Management; Safety and Human Factors; I82: Accidents and Transport Infrastructure

Files:

HSL, TRIS, TRB

Created Date:

Apr 29 1983 12:00AM