485 770 50 50 50 50 65 490 775 50 50 50 50 50 475 770
750 50 50 50 50 50 305 650 50 50 50 50 50 315 665 50 50 50 50 50 290 665
800 50 50 50 50 50 100 515 50 50 50 50 50 100 540 50 50 50 50 50 90 545
850 50 50 50 50 50 50 365 50 50 50 50 50 50 385 50 50 50 50 50 50 380
900 50 50 50 50 50 50 190 50 50 50 50 50 50 210 50 50 50 50 50 50 200
950 50 50 50 50 50 50 50 50 50 50 50 50 50 55 50 50 50 50 50 50 65
1000 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50
1050 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50
1100 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50
1150 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50
1200 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50
Note: Criteria based on using 85% or less of left-turn capacity and providing average left-turn delay of 55 seconds or less per vehicle
61
Advancing volume (vph) for 10% left turn
10 Cycle length = 60 seconds Cycle length = 80 seconds Cycle length = 100 seconds
Green Ratios Green Ratios Green Ratios
Opposing
volume
(vph)
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.2 0.3 0.4 0.5 0.6 0.7 0.8
100 200 380 530 680 830 975 1120 200 395 545 690 840 990 1135 180 385 550 695 845 995 1145
150 80 350 510 660 805 950 1095 80 350 520 670 815 960 1105 50 340 525 675 820 965 1115
200 50 285 485 630 780 920 1060 50 290 495 640 785 935 1075 50 260 485 650 790 940 1085
250 50 185 440 600 750 890 1030 50 175 435 615 755 900 1045 50 145 410 615 760 910 1050
300 50 50 365 575 715 855 990 50 50 365 575 725 875 1010 50 50 335 560 725 875 1015
350 50 50 260 510 680 815 955 50 50 250 505 690 830 970 50 50 220 495 690 840 975
400 50 50 95 425 645 785 920 50 50 105 415 645 790 930 50 50 65 405 635 800 940
450 50 50 50 330 560 750 885 50 50 50 315 560 750 890 50 50 50 300 555 765 905
500 50 50 50 185 475 685 835 50 50 50 190 480 690 855 50 50 50 165 455 690 855
550 50 50 50 50 370 610 795 50 50 50 50 375 610 805 50 50 50 50 360 600 810
600 50 50 50 50 265 515 720 50 50 50 50 245 520 735 50 50 50 50 240 515 730
650 50 50 50 50 115 415 635 50 50 50 50 115 425 645 50 50 50 50 90 430 645
700 50 50 50 50 50 295 555 50 50 50 50 50 310 555 50 50 50 50 50 325 570
750 50 50 50 50 50 190 435 50 50 50 50 50 210 470 50 50 50 50 50 185 465
800 50 50 50 50 50 50 330 50 50 50 50 50 70 360 50 50 50 50 50 50 350
850 50 50 50 50 50 50 220 50 50 50 50 50 50 245 50 50 50 50 50 50 255
900 50 50 50 50 50 50 90 50 50 50 50 50 50 105 50 50 50 50 50 50 120
950 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50
1000 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50
1050 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50
1100 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50
1150 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50
1200 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50
Note: Criteria based on using 85% or less of left-turn capacity and providing average left-turn delay of 55 seconds or less per vehicle
62
Advancing volume (vph) for 20% left turn
Cycle length = 60 seconds Cycle length = 80 seconds Cycle length = 100 second
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