task 1 its
TRANSCRIPT
Commen Cycle Time 180 sec.
All Red Time 2 sec.
Amber Time 3 sec.
Effective Green 160 sec.
Phase Traffic Volume No. of Lanes Traffic / Lane Green Time Split Effective Green Time Que Length / veh.
1 760 2 380 0.23 37 13
2 1048 2 524 0.32 51 25
3 852 2 426 0.26 41 17
4 324 1 324 0.20 31 17
Total 2984 1654 1 160
Phase 4 324 Cars per Hour
Phase 1 760 Cars per Hour
Phase 3 852 Cars per Hour
Phase 2 1048 Cars per Hour
Itersection (1)All Red Time = 2 sec.
Amber Time = 3 sec.
PhaseNo. of
Lanes
Saturation Traffic Flow
per lane (car/hr)
Total Saturation Flow
(car/hr)
Actual Flow
(car/hr)
Flow Saturation Flow
Ratio Green Time Split Green Time (sec.) Que Length / veh.
1 3 1800 5400 1848 0.34 0.50 28 22
2 2 1800 3600 440 0.12 0.18 10 6
3 3 1800 5400 1164 0.22 0.32 18 13
Total 5400 14400 3452 0.68 1.00 56
Lost = (2+3)*3 = 15 sec.
Phase 1 Green time = 27.67973856 take 28 sec.
Phase 2 Green time = 9.885620915 take 10 sec.
Phase 3 Green time = 17.43464052 take 18 sec.
Total Green time = 56 sec.
Cycle time = 56 + 15 = 71 sec.
Phase 1 1848 Cars per Hour
Phase 3 1164 Cars per Hour
Phase 2 440Cars per Hour
Phase 1 1600 Cars per Hour
Phase 3 1276 Cars per Hour
Phase 2 1280 Cars per Hour
Intersection (1) Intersection (2)
πΆΒ° =1.5πΏ
1 β π=
1.5 (15)
1 β 0.68= 70.31 β 70 π ππ. πΆπ¦πππ ππππ
πΈπππππ‘ππ£π πΊππππ ππππ = 70 β 15 = 55 π ππ.
Itersection (2)
All Red Time = 2 sec.
Amber Time = 3 sec.
PhaseNo. of
Lanes
Saturation Traffic Flow
per lane (car/hr)
Total Saturation Flow
(car/hr)
Actual Flow
(car/hr)
Flow Saturation Flow
Ratio Green Time Split Green Time (sec.) Que Length / veh.
1 3 1800 5400 1600 0.30 0.33 17 14
2 3 1800 5400 1280 0.24 0.27 19 6
3 2 1800 3600 1276 0.35 0.40 20 13
Total 5400 14400 4156 0.89 1.00 56
Lost = (2+3)*3 = 15 sec.
Phase 1 Green time = 16.2962963 take 17 sec.
Phase 2 Green time = 13.03703704 take 14 sec.
Phase 3 Green time = 19.49444444 take 20 sec.
Total Green time = 56 sec.
Cycle time = 56 + 15 = 71 sec.
πΆΒ° =1.5πΏ
1 β π=
1.5 (15)
1 β 0.89= 204.54 ππππ 70 π ππ. πΆπ¦πππ ππππ
πΈπππππ‘ππ£π πΊππππ ππππ = 70 β 15 = 55 π ππ.
Inter. 1 71 sec.
π‘πππππ = πΏ
π=
230 π
8= 28.75 π ππ. offset
π‘πππππ = πΏ
πβ QH β Loss
= 230
8 β 14 β 2 + 2 = 2.75 π ππ.
Inter. 2 71 sec.
28 sec. 17 sec.