sr 60 “twin pairs” - City of Vero Beach

HCM Signalized Intersection Capacity Analysis
10: 10 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 12 594 19 80 96 0 0 94 55
Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900
Lane Width 12 12 12 12 11 12 12 12 12 12 12 12
Total Lost time (s) 3.9 4.2 4.2 4.2
Lane Util. Factor 0.86 1.00 1.00 1.00
Frt 1.00 1.00 1.00 0.95
Flt Protected 1.00 0.95 1.00 1.00
Satd. Flow (prot) 6161 1770 1863 1771
Flt Permitted 1.00 0.55 1.00 1.00
Satd. Flow (perm) 6161 1017 1863 1771
Peak-hour factor, PHF 1.00 1.00 1.00 0.68 0.81 0.85 0.76 0.81 1.00 1.00 0.76 0.78
Adj. Flow (vph) 0 0 0 18 733 22 105 119 0 0 124 71
RTOR Reduction (vph) 0 0 0 0 4 0 0 0 0 0 43 0
Lane Group Flow (vph) 0 0 0 0 769 0 105 119 0 0 152 0
Turn Type Perm NA Perm NA NA
Protected Phases 6 8 4
Permitted Phases 6 8
Actuated Green, G (s) 38.6 10.8 10.8 10.8
Effective Green, g (s) 40.1 11.8 11.8 11.8
Actuated g/C Ratio 0.67 0.20 0.20 0.20
Clearance Time (s) 5.4 5.2 5.2 5.2
Vehicle Extension (s) 3.0 3.0 3.0 3.0
Lane Grp Cap (vph) 4117 200 366 348
v/s Ratio Prot 0.06 0.09
v/s Ratio Perm 0.12 c0.10
v/c Ratio 0.19 0.53 0.33 0.44
Uniform Delay, d1 3.8 21.6 20.7 21.2
Progression Factor 1.00 0.89 0.88 1.00
Incremental Delay, d2 0.1 2.4 0.5 0.9
Delay (s) 3.9 21.6 18.7 22.1
Level of Service A C B C
Approach Delay (s) 0.0 3.9 20.1 22.1
Approach LOS A A C C
Intersection Summary
HCM 2000 Control Delay 9.9 HCM 2000 Level of Service A
HCM 2000 Volume to Capacity ratio 0.26
Actuated Cycle Length (s) 60.0 Sum of lost time (s) 8.1
Intersection Capacity Utilization 33.3% ICU Level of Service A
Analysis Period (min) 15
c Critical Lane Group
PM Peak 5:00 pm 11/9/2012 2012 Existing Conditions Synchro 8 Report
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