page E 



CHELSEA STREET AT WARREN STREET 

 1991 NO BUILD PH PEAK HOUR 

 date:05-S5-193B tiis:09:EB:E7 



SATURATION FLOW ADJUSTMENT WORKSHEET 



DIR LN GROUP IDEAL N Fwid Fhv Fgr Fpark Fbu5 Farea Frt Fit s 



EB LT 1800 1 1.000 0.976 1.005 1.000 l.OOC 0.900 1.000 0.950 1509 



EB TH-RT 1800 2 1.000 0.976 1.005 1.000 1.000 0.900 0.996 1.000 316'i 



WB LT IBOO 1 1.000 0.976 0.995 l.OOC 1.000 0.900 1.000 O.'il'i 65E 



UB TH-RT 1800 3 1.000 0.976 0.995 1.000 1.000 0.900 0.973 1.000 ^1591 



NB LT-TH-RT 1800 1 l.OOC 0.995 0.990 1.000 1.000 0.900 0.881 0.913 mh 



SB LT-RT 1800 1 1.000 0.995 0.980 1.000 1.000 0.900 0.870 0.868 1193 



SUFPLERENTAL WORKSHEET FOR LEFT-TURN ADJUSTMENT FACTOR FLT 



INPUT VARIABLES 



DIR C N Va Vt Vlt Pit No Vo Plto 



nB 75 37 1 11 1399 11 1.00 E 675 0.00 



NB 75 EO 1 156 56 100 0.6't 1 67 0.78 



SB 75 EO 1 300 67 S33 0.78 1 56 0.6^1 



CALCULATIONS 



DIR Sop Yo Bu Fs PI Gq Pt Gf El Fi Fit 



WB 3600 0.188 E7. 730 0.«3 1.000 8.865 0.000 0.000 E.^BS O.AK O.'il't 



NB 1425 0.047 16.906 0.633 0.6't3 E.719 0.357 0.837 1.350 0.913 0.913 



SB \W 0.038 17. W O.BM 1.000 E.176 0.000 0.000 1.339 0.868 0.868 



CAPACITY ANALYSIS WORKSHEET 



V s v/5 g/C c v/c CRITICAL 



E33 1509 0.11 0.13 EEE 0.83 » 



898 3164 O.SB 0.6E 1957 0.46 



11 65S O.OS 0.49 318 0.03 



E114 4591 0.46 0.49 ES40 0.94 » 



156 1S84 O.IE 0.E6 336 0.46 



300 1193 0.E5 0.E6 31S 0.96 » 



CYCLE= 75.0 LOST= 9.0 SUH V/S CRIT= 0.8S TOTAL V/C= 0.93 

 FGR THE EASTBOUND PROTECTED/PERMISSIVE LEFT TURN LANE THE CAPACITY, V/S AND V/C 

 RATIOS HAVE ALL BEEN ADJUSTED TO REFLECT fi CAPACITY FOR 

 85 LEFT TURNS ON THE CHANGE INTERVAL AND ON THE PERMISSIVE PHASE 



LEVEL OF SERVICE WORKSHEET 



DIR LN GROUP v/c g/C C dl c ■ dE PF Delay LOS Avg Q 95); Q 



EB LT 0.83 0.6S 75.0 8.51 E8E IE. 44 1.00 E0.94 C 4.E 5 



EB TH-RT 0.46 0.6S 75.0 5.80 1957 0.13 0.85 5.03 B 6.8 7 



U6 LT 0.C3 0.49 75.0 7.60 318 0.00 1.00 7.60 B 0.1 1 



WB TH-RT 0.94 0.49 75.0 13.85 EE40 6,68 0.85 17.46 C E0.5 E9 



NB LT-TH-RT 0.46 0.E6 75.0 17.68 336 0.75 0.85 15.66 C E.4 3 



SB LT-RT 0.96 0.E6 75.0 SO. 76 31E E9. 81 1.00 50.57 E 6.5 14 



DIR Delay LOS 



EB 8.31 6 



WB 17.40 C 



NB 15.66 C 



SB 50.57 E 



INTERSECTION DELAY = 17.84 INTERSECTION LOS=C 



THE CYCLE LENGTH WITHIN THE BOUNDS OF 60 TO lEO SECONDS 

 WHICH MINIMIZES CRITICAL MOVEMENT DELAY IS 7E.C SECONDS 



FOR A V/C RATIO OF .95 THE CYCLE SHOULD BE 65. E SECONDS 



for chosen cycle lenoth 7E.0 



?uoc?5tef; tinnc phase I i5 G.? 5?c; oroPTi, 0,0 sec; vello* + red clear 



