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- W767355441 abstract "Coordinated arterial signal timing plans are typically designed for normal weather conditions based on a number of assumed traffic flow characteristics. Qualitatively, during winter operations vehicle speeds decrease, arrival time of platoons shift, vehicle headway increases, platoon dispersion increases, and saturation flow rates decrease. As a result, good weather signal timing plans may be less than optimal during winter operations. Although there has been some research conducted regarding the effects of weather on some traffic flow parameters, these have been based upon manual field observations. There has been little work on developing automated methods of measuring these parameters or assessing of the benefits that could be achieved by implementing alternative timing plans during winter events. This paper presents findings from the automated collection of high resolution signal controller data and Bluetooth probe vehicle travel times to characterize both the microscopic and macroscopic operation of a four intersection signalized arterial during winter weather conditions (snow and ice on pavement) as well as clear pavement conditions. An 83 second increase in median travel time through the system was measured during winter conditions. Platoon shifts of 15, 25, and 30 seconds were measured at three intersection links which corresponded to an approximate reduction in design speed of 7 to 11 miles per hour (MPH) on a corridor with a posted speed of 55 MPH. Alternative offsets were calculated that showed an opportunity to decrease overall vehicle delay by 26.7% for southbound vehicles during the AM peak snow event." @default.
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- W767355441 date "2011-01-01" @default.
- W767355441 modified "2023-09-24" @default.
- W767355441 title "Assessing Opportunities and Benefits of Alternative Winter Operation Timing Plans for Signalized Arterials" @default.
- W767355441 hasPublicationYear "2011" @default.
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