?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F18187%2F&rft.title=Development+of+a+New+Jughandle+Design+for+Facilitating+High-Volume+Left+Turns+and+U-Turns&rft.creator=Smith%2C+Douglas&rft.description=The+jughandle+is+a+category+of+unconventional+intersection+that+redistributes+left+turns+to+improve+capacity+and+safety.+The+New+Jersey+Department+of+Transportation%2C+a+pioneer+in+jughandle+design%2C+classifies+jughandles+as+either+Type+A+(forward+ramp+intersecting+the+cross+street)%2C+Type+B+(forward+ramp+curving+left+to+intersect+the+mainline)%2C+or+Type+C+(reverse+loop+ramp).%0D%0AThis+research+has+developed+a+new+type+of+jughandle+design+referred+to+as+Type+A%2BB.+This+design+closes+the+minor+approaches+at+intersections+and+directs+traffic+through+a+jughandle+onto+the+mainline.+It+also+accommodates+U-turns+and+mainline+left+turns+in+a+manner+similar+to+traditional+Type+B+jughandles.+A+unique+type+of+signal+phasing%2C+developed+to+accommodate+this+design%2C+allows+both+jughandles+to+move+concurrently.+This+type+of+intersection+is+hypothesized+to+be+most+appropriate+for+the+retrofit+of+suburban+arterials+requiring+installation+of+a+median+barrier.+The+retrofit+would+install+a+median+barrier+with+the+jughandles%2C+and+eliminate+signals+at+intersections+with+low+cross-street+volumes%2C+replacing+them+with+right+turns+followed+by+U-turns+(RTUT).+The+objective+of+this+research+is+to+determine+whether+this+is+an+appropriate+context+for+the+design%2C+and+under+what+general+volume+conditions+the+Type+A%2BB+jughandle+can+reduce+delay.%0D%0ASimulation+software+was+used+to+compare+performance+measures+for+the+Type+A%2BB+jughandle+against+a+conventional+intersection+and+a+traditional+Type+A+jughandle%2C+for+a+wide+range+of+traffic+volumes+whose+turn+movement+proportions+were+modeled+after+a+suburban+arterial.+The+research+also+tested+use+of+this+design+on+an+existing+suburban+arterial+in+the+Pittsburgh+region.+Measures+of+performance+evaluated+include+intersection+delay%2C+additional+footprint%2C+fuel+consumption%2C+and+number+of+stops.+It+was+found+that+the+Type+A%2BB+jughandle+significantly+reduced+delay+under+high-volume+conditions%2C+and+resulted+in+a+much+larger+intersection+footprint.&rft.date=2013-06-27&rft.type=University+of+Pittsburgh+ETD&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F18187%2F1%2Fsmithdp_etd2013.pdf&rft.identifier=++Smith%2C+Douglas++(2013)+Development+of+a+New+Jughandle+Design+for+Facilitating+High-Volume+Left+Turns+and+U-Turns.++Master's+Thesis%2C+University+of+Pittsburgh.++++(Unpublished)++