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Sub-problem 1b - Page 1 of 4
Sub-problem 1b:
Analysis of the
Signalized Intersection with Projected Traffic
Step 2: Results
A comparison of operations between a TWSC and signal controlled intersection
with existing traffic and geometry would be informational and provide some
data for further comparisons later. The results, including queue, delay, and
LOS (assuming an actuated signal running a 120-second cycle) are shown
below:
|
Table 6. Existing
Museum at Reitz comparing TWSC with Signal Control |
|
|
EB |
WB |
NB |
SB |
|
L |
T |
R |
L |
T |
R |
L |
T |
R |
L |
T |
R |
|
Queue w/TWSC |
0.7 |
0 |
0 |
0 |
0 |
0 |
4.1 |
0 |
4.1 |
8.6 |
0 |
7.3 |
|
Queue w/Signal |
4.9 |
28.4 |
28.4 |
0 |
27.7 |
27.7 |
1.0 |
0 |
1.0 |
3.2 |
0 |
8.5 |
|
Delay w/TWSC |
12.5 |
0 |
0 |
0 |
0 |
0 |
999 |
0 |
999 |
999 |
0 |
123.5 |
|
Delay w/Signal |
14.9 |
17.4 |
17.4 |
0 |
17.4 |
17.4 |
27.2 |
0 |
27.2 |
28.5 |
0 |
32.4 |
|
LOS w/TWSC |
B |
A |
A |
- |
A |
A |
F |
- |
F |
F |
- |
F |
|
LOS w/Signal |
B |
B |
B |
- |
B |
B |
C |
- |
C |
C |
- |
C |
We can also perform a signalized intersection analysis using projected
traffic under the same actuated control parameters. A similar comparison
between TWSC and signal control is listed in the following table:
|
Table 7. Projected
Museum at Reitz considering Actuated Signal Control |
|
|
EB |
WB |
NB |
SB |
|
L |
T |
R |
L |
T |
R |
L |
T |
R |
L |
T |
R |
|
Queue TWSC |
6.7 |
0 |
0 |
0 |
0 |
0 |
4.1 |
0 |
4.1 |
29.1 |
0 |
50.1 |
|
Queue Signal |
64.1 |
29.7 |
29.7 |
0 |
40.4 |
40.4 |
1.0 |
0 |
1.0 |
12.5 |
0 |
64.3 |
|
Delay TWSC |
30.4 |
0 |
0 |
0 |
0 |
0 |
999 |
0 |
999 |
999 |
0 |
999 |
|
Delay Signal |
584.6 |
17.8 |
17.8 |
0 |
24.6 |
24.6 |
27.3 |
0 |
27.3 |
35.5 |
0 |
311.4 |
|
LOS TWSC |
D |
A |
A |
- |
A |
A |
F |
- |
F |
F |
- |
F |
|
LOS Signal |
F |
B |
B |
- |
C |
C |
C |
- |
C |
D |
- |
F |
The results are very much
the same as in the first comparison but intensified because of the
increased volumes being analyzed.
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