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ACTIVITY - HIGHWAY INTERSECTIONS - GROUP 4

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School
Malayan Colleges Laguna**We aren't endorsed by this school
Course
CE 105
Subject
Civil Engineering
Date
Jan 10, 2025
Pages
5
Uploaded by GrandKnowledge16041
ACTIVITY - Highway IntersectionsCE 105: Transportation EngineeringGROUP 4CONTRIBUTORS:GAYOS, NOELLE PAULINE N2021160131GELLANG, ALBERT CLAUDE2020139204GOTIONGCO, JOHN DAN ALDRIN2021160034FRANCE, NINO O2021160116ESPIRITU, KYLE SHERMMEL2021150516Highway IntersectionsPROBLEM. (use the provided answer sheet template). A certain level terrain islocated in Laguna with a population of 250,000. The four-lane major streetintersects the two-lane minor street (controlled with YIELD sign). The approachspeed of major street traffic was observed and found to be 30 mph. The vehiclecomposition during the vehicle count was unknown. Dedicated lanes are notprovided for the right turn from major street. The curb radius within the vicinity ofthe intersection is less than 60 degrees. Existing peak hour volume aresummarized as follows:West-east and east-west through flow = 300 and 400 vph, respectivelyRight and left turns from major street = 100 and 50 vph, respectivelyRight and left turns from minor street = 100 and 50 vph, respectivelyWORKSHEET FOR THE ANALYSIS OF A T-INTERSECTIONLOCATION: LAGUNANAME: GROUP 4
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ACTIVITY - Highway IntersectionsCE 105: Transportation EngineeringHOURLY VOLUMES (in vph)Major Street: 4 Lane StreetNorthGrade= 0%; N= 2 Lane Street / dxnDate of Count:Minor Street: 2 Lane StreetGrade = 0%; N =1 Lane Street / dxnTime Period: 5-6 pmType of Control: YieldAvegrage Speed:30mphPeak Hour Factor: NSTurn Angle = 60 degreesVOLUMES (in pcph)V2= 330V3= 110V4= 55V5= 440V7 = 55V9 = 110VOLUME ADJUSTMENTSMOVEMENTNO.234579Volume(vph)3001005040050100Volume(pcph)3301105544055110
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ACTIVITY - Highway IntersectionsCE 105: Transportation EngineeringStep 1: RT from Minor StreetV9Conflicting flow,Vc(0.5 x V3)+V2= 350 vphCritical gap, Tc6 sec (from table 10-2)Potential capacity, Cp675 pcph (from figure 10-3)Actual capacity, CmCm=Cp= 675 pcphStep 2: LT from Major StreetV4Conflicting flow,VcV3+V2= 400 vphCritical gap, Tc7 sec (from table 10-2)Potential capacity, Cp500 pcph (from figure 10-3)Actual capacity, CmCm=Cp= 500 pcph% of CpUtilized andImpedance Factor(V/Cp) x 100 = 11 %P40.925 (from figure 10-5)
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ACTIVITY - Highway IntersectionsCE 105: Transportation EngineeringStep 3: LT From minorStreetV7Conflicting flow,Vc(0.5 xV3)+ V2+V4+V5 = 800 vphCritical gap, Tc8 sec (from table 10-2)Potential capacity, Cp200 pcph (from figure 10-3)Actual capacity, CmCp xP4 = 190 pcphShared-Lane CapacityCsh= (V7+V9)/[(V7/Cm7)+(V9/Cm9)]=MOVEMENTNO.VCmCshCrAve delay(sec/veh)LOS(from table 10-3)91106753652007.95321637468C75519045550050044523.5102040816A
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ACTIVITY - Highway IntersectionsCE 105: Transportation EngineeringSolution:Shared-Lane CapacityCsh= (V7+V9)/[(V7/Cm7)+(V9/Cm9)= (55 + 110) / [(55/500) + (110/700)]= 617.6470588Csh 9 =617.6470588 pcphCsh 7 =617.6470588 pcphCsh 4 =208.125 pcphReserve CapacityCr =Csh - VCr 9 = 617 - 110 - 55 =452.6470588 pcphCr 7 = 617 - 110 - 55 =452.6470588 pcphCr 4 =208.125 - 55 = 153.125 pcph
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