Q2- The table below lists the needed data for designing a traffic signal for a 3-leg signalized intersection. Determine the following using Webster's method; assume Qs is 2000 vphpl. 1- Compute the actual green and actual red intervals. 2- Draw the cycle timing diagram. Qa (vph) Amber All-red ts (sec) Lane 1 Lane 2 (sec) (sec) Phase I 399 710 4 Phase II 520 366 3 Phase III 144 210 3 122 322

QUESTION 3 Match the term with its definition. ✓ phase ✓ interval ✓ cycle ✓ring ✓ barrier A. the total time to complete one sequence of signalization for all movements at an intersection B. a continuous sequence of phases C. reference within the cycle at which time a phase in each ring terminates, separating conflicting movements such as east-west from north-south D. the time given to opposing left turn movements E. duration of time during which the signal indications do not change F. the green, change and clearance intervals assigned to a specific movement or movements of traffic

The following are the inputs to perform an analysis for the Level of Service (LOS) in traffic signal analysis, except: А. Cycle time В. Saturation flow C. Delay D. Intergreen

Q3- For the traffic signal data below; 1- Fill the table with Data. 2 - calculate optimum cycle length. 3- Draw the timing diagram. Yellow Time All red Time (sec) lost Red Time Geff. Green Phases time (sec) Time (sec) (sec) (sec) (sec) P1 2 1 26 P2 3 1 30 P3 3 2 29 P4 3 1 31