Question

2. Determine the minimum cycle length for the intersection with the volumes shown on the table below. The intersection is designed to have the following three phases: Phase A for left-turn movements from the EB and WB approaches; Phase B for the through and right movements from the EB and WB approaches; Phase C serving all movements for the NB and SB approaches. EB approach WB approach N B approach SB approach LT RLT RL TRL TR 110 500 200 100 550220 120 450 180 120 400 250 Assume each intersection approach has 2 lanes, one for left-turning vehicles and one for through and right-turning vehicles. The saturation discharge headway is 2.10 seconds.

Answer 1

Answer: EB of reach WB oncoch. N ach e inen 110 500 300 m 550 350 130 0 1 150 2.0 phas it No 100 phar a: Jao 10 Scanned with CamScanner

phose 3: 10 to 120 180 Critical volume for 3 phases : phase i phage 2 phoye 3 : 110 550 : 450 Therefde, total critical volume : 110 + 550 + 450 v = 1110 uph (vchichels pean hour) satioation flow rate for intersection, 5: = 3600 s where si = saturation flow sate CS CamScanner = satuation herd way

S : 2.1 Seconds Sy 3600 : 1714.28 vph now, wing website no euntibn. Co . 1.5645 where, coa cycle length T ipolal lost time (ayume o in this case) no lost time given minimum Cycle lime emin s 7714.28 Secs 1 - 1110 c orto sees SECS 1 -0.64750 secs : ses secs 0.3525 min : 14.184 sec Scanned withcmih 15 sec CamScanner