CE 474 Class 19 - CE 474 Fall...

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CE 474 – Class 19

October 7, 2015

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For next time…

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• List steps to complete A43• Bring A36 VISSIM network with A28

volumes to Class 20• A36 performance data

based on A28 volumes

4

Approach Base (A28) A36

NB 35 25

SB 21 12

EB 5 7

WB 8 10

Intx 22.1 15.2

Average delay (sec/veh)

Approach Base (A28) A36 Change %Change

NB 35.0 25.0 10.0 29%

SB 21.0 12.0 9.0 43%

EB 5.0 7.0 -2.0 -40%

WB 8.0 10.0 -2.0 -25%

Intx 22.1 15.2 7.0 32%

Average delay (sec/veh)

0

5

10

15

20

25

30

35

40

NB SB EB WB Intx

Ave

rage

del

ay, s

ec/v

eh

Approach

Base (A28)

A36

Presenting Performance Comparison Data

r1 g1 r2 g2

timetime

C1 C2

Acc

um

ula

ted

nu

mb

er o

f ve

hic

les

Acc

um

ula

ted

nu

mb

er o

f ve

hic

les

arrivals

arrivals

C1

depa

rtur

es

depa

rtur

es

5

r1 g1 r2 g2

timetime

C1 C2

Qu

eue

C1

Qu

eue

d1

d2 = 2d1

d1

r1=30 g1=30 r2=60 g2=60timetime

C1=60 C2=120

Qu

eue

Qu

eue

dt1=xx

dt2=xx

vr1=4

.2 vr2=8

.3

6

gNS=55s gEW=55s

gNS=25s gEW=25s

gNS=10s gEW=10s

C = 120 secgreen ratio (g/C) = 0.92

C = 60 secgreen ratio (g/C) = 0.83

C = 30 secgreen ratio (g/C) = 0.67

0 60 120

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r1 g1 r2 g2

timetime

C1 C2

Acc

um

ula

ted

nu

mb

er o

f ve

hic

les

Acc

um

ula

ted

nu

mb

er o

f ve

hic

les

arrivals

arrivals

C1de

part

ures

depa

rtur

es

8

r1 g1 r2 g2

timetime

C1 C2

Qu

eue

C1

Qu

eue

d1

d2 = 2d1

d1

r1=30 g1=30 r2=60 g2=60timetime

C1=60 C2=120

Qu

eue

Qu

eue

dt1=xx

dt2=xx

vr1=4

.2 vr2=8

.3

9

gNS=55s gEW=55s

gNS=25s gEW=25s

gNS=10s gEW=10s

C = 120 secgreen ratio (g/C) = 0.92

C = 60 secgreen ratio (g/C) = 0.83

C = 30 secgreen ratio (g/C) = 0.67

0 60 120

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Case 2

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For next time…

13

• List steps to complete A43• Bring A36 VISSIM network with A28

volumes to Class 20• A36 performance data

based on A28 volumes

Mean Values for Case 1 and Case 2

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