sr 60 “twin pairs” - City of Vero Beach

HCM Signalized Intersection Capacity Analysis
9: SR 60 WB & 11 Avenue
11/13/2012
Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR
Lane Configurations
Volume (vph) 0 0 0 17 858 53 24 122 0 0 43 44
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 4.2 4.2 4.2
Lane Util. Factor 0.86 1.00 1.00 1.00 1.00
Frt 0.99 1.00 1.00 1.00 0.85
Flt Protected 1.00 0.95 1.00 1.00 1.00
Satd. Flow (prot) 6123 1770 1863 1863 1583
Flt Permitted 1.00 0.49 1.00 1.00 1.00
Satd. Flow (perm) 6123 913 1863 1863 1583
Peak-hour factor, PHF 1.00 1.00 1.00 0.70 0.87 0.71 0.75 0.73 1.00 1.00 0.92 0.92
Adj. Flow (vph) 0 0 0 24 986 75 32 167 0 0 47 48
RTOR Reduction (vph) 0 0 0 0 13 0 0 0 0 0 0 41
Lane Group Flow (vph) 0 0 0 0 1072 0 32 167 0 0 47 7
Turn Type Perm NA pm+pt NA NA Perm
Protected Phases 6 3 8 4
Permitted Phases 6 8 4
Actuated Green, G (s) 34.3 15.1 15.1 7.3 7.3
Effective Green, g (s) 35.8 16.1 16.1 8.3 8.3
Actuated g/C Ratio 0.60 0.27 0.27 0.14 0.14
Clearance Time (s) 5.4 5.0 5.2 5.2 5.2
Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0
Lane Grp Cap (vph) 3653 299 499 257 218
v/s Ratio Prot 0.01 c0.09 0.03
v/s Ratio Perm 0.18 0.02 0.00
v/c Ratio 0.29 0.11 0.33 0.18 0.03
Uniform Delay, d1 5.9 16.5 17.6 22.9 22.4
Progression Factor 0.90 1.00 1.00 1.00 1.00
Incremental Delay, d2 0.2 0.2 0.4 0.3 0.1
Delay (s) 5.6 16.7 18.0 23.2 22.4
Level of Service A B B C C
Approach Delay (s) 0.0 5.6 17.8 22.8
Approach LOS A A B C
Intersection Summary
HCM 2000 Control Delay 8.5 HCM 2000 Level of Service A
HCM 2000 Volume to Capacity ratio 0.33
Actuated Cycle Length (s) 60.0 Sum of lost time (s) 12.1
Intersection Capacity Utilization 38.9% 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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