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 (Co) using the Webster's formula equal: b) 51.80 sec c) 61.55 sec d) 58.56 sec time in N-S bound phase (use C. 65 sec) equal: a) 45.04 sec 15- The green a) 24 sec b) 26 sec c) 28 sec d) 30 sec e) 50.92 sec f) none 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: a) 19.50 sec b) 24.01 sec c) 15.48 sec d) 17.52 sec e) 22.32 sec ) none 17- The average delay per vehicle in SB approach equal: = a) 19.50 sec b) 24.01 sec c) 15.48 sec d) 17.52 sec e) 22.32 sec f) none 18- Using the average delay per vehicle in NB 25 sec; SB 30 sec; EB 16 sec; and 19 sec. The Level of Service (LOS) for the whole intersection is: WB a) LOS A b) LOS B c) LOS C d) LOS D e) LOS E 1) LOS F