21.01.2015 Views

Appendix D Traffic Impact Analysis - westplainseis.com

Appendix D Traffic Impact Analysis - westplainseis.com

Appendix D Traffic Impact Analysis - westplainseis.com

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

HCM Signalized Intersection Capacity <strong>Analysis</strong><br />

3: Hwy. 2 & Lawson St 2/10/2011<br />

Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR<br />

Lane Configurations<br />

Volume (vph) 89 2541 47 113 1937 63 103 54 114 108 47 66<br />

Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900<br />

Total Lost time (s) 5.0 5.0 5.0 5.0 4.0 4.0 4.0 4.0<br />

Lane Util. Factor 1.00 0.95 1.00 0.95 1.00 1.00 1.00 1.00<br />

Frt 1.00 1.00 1.00 1.00 1.00 0.85 1.00 0.85<br />

Flt Protected 0.95 1.00 0.95 1.00 0.97 1.00 0.97 1.00<br />

Satd. Flow (prot) 1787 3564 1787 3557 1821 1599 1818 1599<br />

Flt Permitted 0.95 1.00 0.95 1.00 0.52 1.00 0.51 1.00<br />

Satd. Flow (perm) 1787 3564 1787 3557 977 1599 951 1599<br />

Peak-hour factor, PHF 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93<br />

Adj. Flow (vph) 96 2732 51 122 2083 68 111 58 123 116 51 71<br />

RTOR Reduction (vph) 0 1 0 0 1 0 0 0 41 0 0 24<br />

Lane Group Flow (vph) 96 2782 0 122 2150 0 0 169 82 0 167 47<br />

Heavy Vehicles (%) 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1%<br />

Turn Type Prot Prot Perm Perm Perm Perm<br />

Protected Phases 1 6 5 2 4 8<br />

Permitted Phases 4 4 8 8<br />

Actuated Green, G (s) 8.0 80.2 8.0 80.2 24.6 24.6 24.6 24.6<br />

Effective Green, g (s) 8.0 80.2 8.0 80.2 24.6 24.6 24.6 24.6<br />

Actuated g/C Ratio 0.06 0.63 0.06 0.63 0.19 0.19 0.19 0.19<br />

Clearance Time (s) 5.0 5.0 5.0 5.0 4.0 4.0 4.0 4.0<br />

Vehicle Extension (s) 3.0 3.8 3.0 2.5 3.0 3.0 3.0 3.0<br />

Lane Grp Cap (vph) 113 2254 113 2250 190 310 185 310<br />

v/s Ratio Prot 0.05 c0.78 0.07 c0.60<br />

v/s Ratio Perm 0.17 0.05 c0.18 0.03<br />

v/c Ratio 0.85 1.23 1.08 0.96 0.89 0.26 0.90 0.15<br />

Uniform Delay, d1 58.8 23.3 59.4 21.6 49.8 43.4 49.9 42.4<br />

Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00<br />

Incremental Delay, d2 41.5 109.5 107.7 10.4 35.8 0.5 39.7 0.2<br />

Delay (s) 100.3 132.8 167.1 32.0 85.6 43.9 89.7 42.7<br />

Level of Service F F F C F D F D<br />

Approach Delay (s) 131.7 39.3 68.0 75.6<br />

Approach LOS F D E E<br />

Intersection Summary<br />

HCM Average Control Delay 89.1 HCM Level of Service F<br />

HCM Volume to Capacity ratio 1.11<br />

Actuated Cycle Length (s) 126.8 Sum of lost time (s) 9.0<br />

Intersection Capacity Utilization 104.9% ICU Level of Service G<br />

<strong>Analysis</strong> Period (min) 15<br />

Description: Optimized<br />

c Critical Lane Group<br />

West Plains Development <strong>Traffic</strong> <strong>Impact</strong> <strong>Analysis</strong><br />

Synchro 7 - Report<br />

2032 Alternative 1 Buildout Page 3

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!