A two-lane minor road (N-S bound) intersect with three-lane major road (E-W bound) at 90° forming a four-leg intersection with the following traffic volume in veh/hr. Traffic NB SB EB WB Direction R T L R T L R T L R T L Traffic Volume 30 180 50 30 200 20 45 250 30 40 300 15 Saturated Flow 900 veh/hr 900 veh/hr 1000 veh/hr 1000 veh/hr Note: In N-S bound the right and through movement are shared lane and left movement is exclusive. In E-W bound all movements are shared. If the yellow interval for two phases (N-S & E-W bound) equal 4 second, and the time lost per phase equal 7 second. Answer the following questions: 14- The optimum cycle length (C.) using the Webster's formula equal: a) 45.04 sec b) 51.80 sec c) 61.55 sec 15- The green time in N-S bound phase (use Co a) 24 sec b) 26 sec c) 28 sec e) 50.92 sec ) none d) 58.56 sec 65 sec) equal: d) 30 sec e) 32 sec f) none In questions 15, 16, and 17 use the cycle length = 73 sec. and the green time in N-S phase = 29 second, and in E-W phase-36 second: 16- The average delay per vehicle in NB approach equal: d) 17.52 sec 25 sec; SB e) 22.32 sec f) none a) 19.50 sec b) 24.01 sec c) 15.48 sec d) 17.52 sec 17- The average delay per vehicle in SB approach equal: a) 19.50 sec b) 24.01 sec c) 15.48 sec e) 22.32 sec f) none 18- Using the average delay per vehicle in NB 30 sec; EB 16 sec; and WB 19 sec. The Level of Service (LOS) for the whole intersection is: b) LOS B c) LOS C a) LOS A d) LOS D e) LOS E f) LOS F