Graves Mill EB EBT/EBR 240

HCM Signalized Intersection Capacity Analysis 6: SB Ramp & Graves Mill

Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR

Lane Configurations Traffic Volume (vph)

0 766 1194 121 1230 0 0 0 0 167 1 295 Future Volume (vph) 0 766 1194 121 1230 0 0 0 0 167 1 295 Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 Lane Width 12 12 12 12 12 12 12 12 12 12 11 11 Grade (%) 0% 0% 3% 3% Total Lost time (s) 5.0 5.0 5.0 5.0 5.0 5.0 Lane Util. Factor 0.95 1.00 1.00 0.95 1.00 1.00 Frt 1.00 0.85 1.00 1.00 1.00 0.85 Flt Protected 1.00 1.00 0.95 1.00 0.95 1.00 Satd. Flow (prot) 3574 1553 1787 3574 1657 1451 Flt Permitted 1.00 1.00 0.27 1.00 0.95 1.00 Satd. Flow (perm) 3574 1553 510 3574 1657 1451 Peak-hour factor, PHF 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 Adj. Flow (vph) 0 870 1357 138 1398 0 0 0 0 190 1 335 RTOR Reduction (vph) 0 0 319 0 0 0 0 0 0 0 0 82 Lane Group Flow (vph) 0 870 1038 138 1398 0 0 0 0 0 191 253 Heavy Vehicles (%) 0% 1% 4% 1% 1% 0% 0% 0% 0% 4% 0% 6% Turn Type NA Perm pm+pt NA Split NA Perm Protected Phases 2 1 6 8 8 Permitted Phases 2 6 8 Actuated Green, G (s) 72.0 72.0 84.0 84.0 16.0 16.0 Effective Green, g (s) 72.0 72.0 84.0 84.0 16.0 16.0 Actuated g/C Ratio 0.65 0.65 0.76 0.76 0.15 0.15 Clearance Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 Vehicle Extension (s) 5.0 5.0 5.0 5.0 5.0 5.0 Lane Grp Cap (vph) 2339 1016 470 2729 241 211 v/s Ratio Prot 0.24 0.02 c0.39 0.12 v/s Ratio Perm c0.67 0.21 c0.17 v/c Ratio 0.37 1.02 0.29 0.51 0.79 1.20 Uniform Delay, d1 8.7 19.0 4.3 5.0 45.4 47.0 Progression Factor 0.58 1.96 1.05 1.58 1.00 1.00 Incremental Delay, d2 0.1 19.4 0.4 0.4 18.4 126.0 Delay (s) 5.1 56.7 5.0 8.4 63.8 173.0 Level of Service A E A A E F Approach Delay (s) 36.6 8.1 0.0 133.3 Approach LOS D A A F Intersection Summary HCM 2000 Control Delay 38.2 HCM 2000 Level of Service D HCM 2000 Volume to Capacity ratio 1.03 Actuated Cycle Length (s) 110.0 Sum of lost time (s) 15.0 Intersection Capacity Utilization 102.4% ICU Level of Service G Analysis Period (min) 15 c Critical Lane Group

Graves Mill Road Corridor Plan 2040 No Build AM EPR Synchro 9 Report Page 5

HCM Signalized Intersection Capacity Analysis 7: NB Ramp & Graves Mill

Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR

Lane Configurations Traffic Volume (vph) 386 550 0 0 413 68 891 0 236 0 0 0 Future Volume (vph) 386 550 0 0 413 68 891 0 236 0 0 0 Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 Lane Width 12 12 12 12 12 12 11 12 12 12 12 12 Grade (%) 0% -3% 3% 3% Total Lost time (s) 5.0 6.0 6.0 6.0 5.0 5.0 Lane Util. Factor 1.00 0.95 0.95 1.00 0.95 0.95 Frt 1.00 1.00 1.00 0.85 1.00 0.94 Flt Protected 0.95 1.00 1.00 1.00 0.95 0.97 Satd. Flow (prot) 1770 3574 3523 1546 1585 1590 Flt Permitted 0.24 1.00 1.00 1.00 0.95 0.97 Satd. Flow (perm) 438 3574 3523 1546 1585 1590 Peak-hour factor, PHF 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 Adj. Flow (vph) 439 625 0 0 469 77 1012 0 268 0 0 0 RTOR Reduction (vph) 0 0 0 0 0 63 0 43 0 0 0 0 Lane Group Flow (vph) 439 625 0 0 469 14 658 580 0 0 0 0 Heavy Vehicles (%) 2% 1% 0% 0% 4% 6% 3% 0% 0% 2% 2% 2% Turn Type pm+pt NA NA Perm Split NA Protected Phases 1 6 2 4 4 Permitted Phases 6 2 Actuated Green, G (s) 49.4 49.4 20.7 20.7 49.6 49.6 Effective Green, g (s) 49.4 49.4 20.7 20.7 49.6 49.6 Actuated g/C Ratio 0.45 0.45 0.19 0.19 0.45 0.45 Clearance Time (s) 5.0 6.0 6.0 6.0 5.0 5.0 Vehicle Extension (s) 2.5 2.5 2.5 2.5 2.5 2.5 Lane Grp Cap (vph) 483 1605 662 290 714 716 v/s Ratio Prot c0.20 0.17 0.13 c0.42 0.36 v/s Ratio Perm c0.21 0.01 v/c Ratio 0.91 0.39 0.71 0.05 0.92 0.81 Uniform Delay, d1 23.8 20.2 41.8 36.6 28.4 26.1 Progression Factor 0.85 0.56 1.00 1.00 1.00 1.00 Incremental Delay, d2 19.3 0.7 6.3 0.3 17.3 6.6 Delay (s) 39.6 11.9 48.1 36.9 45.7 32.7 Level of Service D B D D D C Approach Delay (s) 23.3 46.5 39.4 0.0 Approach LOS C D D A Intersection Summary HCM 2000 Control Delay 34.8 HCM 2000 Level of Service C HCM 2000 Volume to Capacity ratio 0.94 Actuated Cycle Length (s) 110.0 Sum of lost time (s) 16.0 Intersection Capacity Utilization 102.4% ICU Level of Service G Analysis Period (min) 15 c Critical Lane Group

Graves Mill Road Corridor Plan 2040 No Build AM EPR Synchro 9 Report Page 6