DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
MASTERS DEGREE RESEARCH PROPOSAL PRESENTATION
EFFECT OF TRAFFIC SIGNALS ON VEHICLE DELAYS IN CLOSE PROXIMITY TO SIGNALIZED INTERSECTIONS IN KAMPALA CITYFRIDAY 2ND MAY 2014*
Research Team STUDENT:Ngabirano Julius 2030166852012/HD08/994U
SUPERVISORS:Ass. Prof. Eng. Dr. Henry M. Alinaitwe
Ass. Prof. Eng. Dr. Umaru Bagampadde*
Delay, Queue length, flow, signal timings Websters Delay Model, Akcelik Delay Model and the HCM (2000) Delay Models Results from existing models not comparable Background*
Performance of intersections Unwarranted traffic signals Studies on traffic performance are still limited. Many intersections and roundabouts at capacityBackground*
Statement of the problem
Signals offer solution to all intersection delays?? Signals installed at most high traffic intersections No specific operational analysis conducted Consideration that unwarranted signals result in delays. *
_General ObjectiveDevelop a model that relates delays to queue lengths and flows*
Specific objectivesApproach queues, flows and delays when signals are working Approach queues, flows and delays when signals are not working Compare intersection queues, delays & flowsDevelop a model*
Significance of the studyPlanning on installation of traffic signs on the junctions Whether traffic signals should operate continuously *
Justification KCCA currently identifying, preparing detailed design critical intersections Whether traffic signals are the ultimate cureVenturing in investments that are not warranted. *
ScopeJinja Road Junction, Wandegeya Junction, Nakawa Junction.Peak periods: Monday Friday 07:30 am 08:30 am Off peak periods: Monday Friday 10:30 am 11:30 amIntersection delays, queue lengths and flows*
Conceptual framework*
Literature Review*
MethodologyJinja Road Junction, Wandegeya Junction, Nakawa Junction Data to be collected on eight daysHCM (2000) method or Vehicle tracking delay measurement technique*
MethodologyHCM (2000) methodObservation sheets Lanes in approachesStopped vehicles
*
MethodologyVehicle Tracking Delay Measurement Technique Observation sheets Travel time for individual vehicles Free Flow Travel Time (FFTT) *
Methodology DatasetMultiple Regression Techniques*Data Reduction and Analysis
Equipment and Personnel Two field observers per lane group surveyed Digital watch with a countdown timer Observation sheetsSaloon Car for measuring FFTT *
Budget estimates *
Work plan *
_Thank You *
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