Extracted text: Consider the tabulated intersection design data below, then the number of vehicles stopped during the red interval for Phase EW is about .............. vehicles. Assume that Qs is 2000 vphpl and use Webster's method procedure. All-red ts (sec) (sec) Qa (vph) Yellow Lane 1 Lane 2 (sec) Phase N 500 600 2 3 Phase S 650 550 2 2 2 Phase EW 300 250 2 1 2 а. 13 b. C. 10 d. 6. Clear my choice