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Title Optimal sensor placement for measuring operating speeds through curves on rural two-lane highways
Publication Date
Date Available
Date Accessioned
Degree MS
Discipline/Department Civil Engineering
Degree Level masters
University/Publisher Oregon State University
Abstract Operating speed is one of the best performance measures that can tell transportation agencies how well or how poorly the transportation system is functioning. Fluctuating operating speeds often mean there is a design flaw or something about the physical road design that violates drivers' expectations. A primary example of this is a horizontal curve on a highway that had a reduced recommended advisory speed. Traditionally, researchers and transportation agencies measure operating speeds along the approach tangent to a horizontal curve and at the midpoint of the curve. This thesis looks at the significance of alternate measuring locations within the curve. It also analyzes the difference between the 85th percentile maximum speed reduction and the more traditional measure of the reduction in 85th percentile speeds, which is used as an indicator of safety.
Subjects/Keywords Operating Speeds; Traffic speed  – Measurement
Contributors Dixon, Karen K. (advisor); Bell, Christopher A. (committee member)
Language en
Country of Publication us
Record ID handle:1957/30029
Repository oregonstate
Date Retrieved
Date Indexed 2017-03-17
Grantor Oregon State University
Issued Date 2012-05-29 00:00:00
Note [] Graduation date: 2012; [peerreview] no;

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