sr 60 “twin pairs” - City of Vero Beach

HCM Signalized Intersection Capacity Analysis
8: Commerce Ave & 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 39 1308 3 50 39 0 0 35 50
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 4.0 4.0 4.0
Lane Util. Factor 0.86 1.00 1.00 1.00
Frt 1.00 1.00 1.00 0.93
Flt Protected 1.00 0.95 1.00 1.00
Satd. Flow (prot) 5559 1593 1676 1567
Flt Permitted 1.00 0.68 1.00 1.00
Satd. Flow (perm) 5559 1140 1676 1567
Peak-hour factor, PHF 1.00 1.00 1.00 0.51 0.79 0.37 0.79 0.68 1.00 1.00 0.56 0.86
Adj. Flow (vph) 0 0 0 76 1656 8 63 57 0 0 62 58
RTOR Reduction (vph) 0 0 0 0 1 0 0 0 0 0 27 0
Lane Group Flow (vph) 0 0 0 0 1739 0 63 57 0 0 93 0
Turn Type Perm NA Perm NA NA
Protected Phases 6 8 4
Permitted Phases 6 8
Actuated Green, G (s) 41.8 7.8 7.8 7.8
Effective Green, g (s) 43.3 8.8 8.8 8.8
Actuated g/C Ratio 0.72 0.15 0.15 0.15
Clearance Time (s) 5.4 5.0 5.0 5.0
Vehicle Extension (s) 3.0 3.0 3.0 3.0
Lane Grp Cap (vph) 4011 167 245 229
v/s Ratio Prot 0.03 c0.06
v/s Ratio Perm 0.31 0.06
v/c Ratio 0.43 0.38 0.23 0.40
Uniform Delay, d1 3.4 23.1 22.6 23.2
Progression Factor 1.48 1.10 1.10 1.00
Incremental Delay, d2 0.3 1.4 0.5 1.2
Delay (s) 5.3 26.8 25.3 24.4
Level of Service A C C C
Approach Delay (s) 0.0 5.3 26.1 24.4
Approach LOS A A C C
Intersection Summary
HCM 2000 Control Delay 7.8 HCM 2000 Level of Service A
HCM 2000 Volume to Capacity ratio 0.43
Actuated Cycle Length (s) 60.0 Sum of lost time (s) 7.9
Intersection Capacity Utilization 45.1% ICU Level of Service A
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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