Effects of Increased U-turns at Intersections on Divided Facilities and Median Divided Versus Five-lane Undivided Benefits
North Carolina Department of Transportation, 2004 - Left-turn lanes - 194 pages
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Impact of Median Openings
_ Impacts on Signalized Intersections
7 other sections not shown
AADT access management adjustment factor analysis approach density approaches per mile Bonneson and McCoy calculated calibration Cary NO Low collision data collision models concem delay Delay Calculated driveway density effect of U-tums Figure ﬁrst ﬁt Flow Reduction Factor Highway impact indicator variable lanes receiving leﬁ tum leﬁ turn leﬁ-tum left tum lane Left turn left-tum Low U-tum cnt Low U-turn McCoy model median openings Median Width NCDOT North Carolina observed ofﬁce land p-value pedestrian perm Poisson distribution predict collisions public street approach queue raised median model raised median segments rcvg U-ts regression analysis residential right tum overlap roadway saturation ﬂow rate Saturation Flow Reduction segment length signalized intersections signiﬁcant signiﬁcantly study sites T-test Table trafﬁc volumes tuming turn lanes turn overlap TWLTL cross-section TWLTL model TWLTL segments U-tum collisions U-tum percentage U-tuming vehicles U-turn cnt validation sites variables