Driver Response in Active Advanced Warning Signs at High-speed Signalized Intersections. Final Report PDF Download
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Author: Z. A. Sabra
Publisher:
ISBN:
Category :
Languages : en
Pages : 104
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Book Description
Author: Z. A. Sabra
Publisher:
ISBN:
Category :
Languages : en
Pages : 104
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 776
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Author:
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ISBN:
Category :
Languages : en
Pages : 704
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Author:
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Category : Highway research
Languages : en
Pages : 640
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Category : School buses
Languages : en
Pages : 112
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Book Description
The primary objectives of this research project were: (1) to develop an active advance warning device (AAWD) comprised of an actuated flashing beacon supplement to a conventional SCHOOL BUS STOP AHEAD sign (S3-1) and (2) to evaluate its effect on driver performance and safety through school bus loading and unloading zones. Secondary objectives were to summarize system components and costs, develop an activation strategy, review the liability risk, review national experience related to safety, and provide guidance regarding specifications and use in Texas. With respect to safety, 37 of 46 studies reported a positive effect resulting from AAWDs. Findings from field studies conducted in Texas also suggest favorable results with confirmed reductions in vehicle approach speeds when the flashing beacon was activated. Costs for the final AAWD are estimated to be 2,000 dollars for the S3-1 sign and flashing beacons and 2,600 dollars for the flashing beacon activation system, not including sign installation or ongoing maintenance and operations costs. A review of published literature and historic case law suggests minimal additional liability risk above what is already experienced by transportation departments. Unique areas of risk relate to "jurisdictional responsibility" for establishing, operating, and maintaining school bus loading and unloading zones and the hazard expectation tied to the flashing beacon activation (i.e., motorists may not exercise the same degree of caution when the bus is not present and the beacons are not flashing despite children being present at the bus stop). Given the favorable safety impacts, the low system cost, and the minimal additional liability risk incurred, the AA WD is recommended for further implementation.
Author: National Research Council (U.S.). Highway Research Information Service
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Category : Highway engineering
Languages : en
Pages : 930
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Author:
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Category : Highway research
Languages : en
Pages : 76
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Category : City planning
Languages : en
Pages : 440
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Author:
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Category :
Languages : en
Pages : 78
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Category : Detectors
Languages : en
Pages : 136
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This report contains the results of the NC Department of Transportation research project Placement of Detection Loops on High Speed Approaches to Traffic Signals (HWY 2007-13). The goal of this project was to determine the best places to locate detectors on the approaches to high-speed signalized intersections and the best signal control strategy to employ in conjunction with those sensor placement ideas to minimize dilemma zone occurrences.
