sr 60 “twin pairs” - City of Vero Beach

HCM Signalized Intersection Capacity Analysis
6: 14 Avenue & SR 60 WB
11/13/2012
Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR
Lane Configurations
Volume (vph) 0 0 0 54 877 33 88 192 0 0 378 96
Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900
Lane Width 12 12 12 11 11 12 12 12 12 12 12 12
Total Lost time (s) 4.1 4.1 5.0 4.0 4.0
Lane Util. Factor 1.00 0.91 1.00 1.00 1.00
Frpb, ped/bikes 1.00 1.00 1.00 1.00 1.00
Flpb, ped/bikes 0.98 1.00 1.00 1.00 1.00
Frt 1.00 0.99 1.00 1.00 0.97
Flt Protected 0.95 1.00 0.95 1.00 1.00
Satd. Flow (prot) 1512 4391 1592 1676 1616
Flt Permitted 0.95 1.00 0.16 1.00 1.00
Satd. Flow (perm) 1512 4391 266 1676 1616
Peak-hour factor, PHF 1.00 1.00 1.00 0.71 0.84 0.75 0.80 0.72 1.00 1.00 0.86 0.72
Adj. Flow (vph) 0 0 0 76 1044 44 110 267 0 0 440 133
RTOR Reduction (vph) 0 0 0 0 7 0 0 0 0 0 18 0
Lane Group Flow (vph) 0 0 0 76 1081 0 110 267 0 0 555 0
Confl. Peds. (#/hr) 10 10 10 10
Turn Type Perm NA pm+pt NA NA
Protected Phases 6 3 8 4
Permitted Phases 6 8
Actuated Green, G (s) 19.0 19.0 30.4 30.4 20.7
Effective Green, g (s) 20.5 20.5 29.9 31.4 21.7
Actuated g/C Ratio 0.34 0.34 0.50 0.52 0.36
Clearance Time (s) 5.6 5.6 4.5 5.0 5.0
Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0
Lane Grp Cap (vph) 516 1500 236 877 584
v/s Ratio Prot c0.25 c0.04 0.16 c0.34
v/s Ratio Perm 0.05 0.20
v/c Ratio 0.15 0.72 0.47 0.30 0.95
Uniform Delay, d1 13.7 17.2 11.4 8.1 18.6
Progression Factor 0.74 0.90 1.60 0.56 1.00
Incremental Delay, d2 0.6 2.8 1.3 0.2 25.4
Delay (s) 10.7 18.3 19.6 4.8 44.1
Level of Service B B B A D
Approach Delay (s) 0.0 17.8 9.1 44.1
Approach LOS A B A D
Intersection Summary
HCM 2000 Control Delay 23.4 HCM 2000 Level of Service C
HCM 2000 Volume to Capacity ratio 0.81
Actuated Cycle Length (s) 60.0 Sum of lost time (s) 13.1
Intersection Capacity Utilization 64.8% ICU Level of Service C
Analysis Period (min) 15
c Critical Lane Group
PM Peak 5:00 pm 11/7/2012 2035 no-build conditions Synchro 8 Report
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