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1
1. Overview
2
1. Overview
3
t(leave) VehNo Headway
67.1 3 67.1
69.2 15 2.2
70.8 20 1.6
72.8 23 2.0
74.1 31 1.2
76.4 36 2.3
78.2 40 1.8
80.1 44 1.9
87.9 52 7.7
1. Overview
4
0.0
0.1
0.1
0.2
0.2
0.3
0.3
0 1 2 3 4 5 6 7 8 9 10
Frequency
Headway (sec)
Headway Frequency
Queued Headway Free-flow Headway
1. Overview
5
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0 1 2 3 4 5 6 7 8 9 10
Frequency
Headway (sec)
Cumulative Headway Frequency
Queued Headway Free-flow Headway
1. Overview
6
2. Initial Steps
Activity #28
Activity #36
Activity #37
Create new folder
7
2. Initial Steps
8
2. Initial Steps
9
10
3. Collect data
11
6. MER file – identify Queued and Non-Queued vehicles
Data C.P. t(leave) tQueue Q/NQ Headway
1 363.12 61.1 Q
1 365.4 47.4 Q 2.28
1 366.97 44 Q 1.57
1 368.32 29 Q 1.35
1 369.7 15.5 Q 1.38
1 371.12 29.4 Q 1.42
1 372.96 23 Q 1.84
1 374.5 22.9 Q 1.54
1 375.74 12.6 Q 1.24
1 377.15 0 NQ 1.41
1 379.67 0 NQ 2.52
1 381.14 0 NQ 1.47
Data Collection Point 1
Queue Free-Flow
1.95
1.58
1.82
1.56
2.27
1.19
1.5
1.6
1.67
1.73
0.9
1.92
1.87
3.58
4.29
7.55
2.15
8.5
1.91
1.57
1.88
1.67
1.69
1.5
1.85
Headway (sec)
12
7. Headway distribution analysis
Queue Free-Flow
1.95
1.58
1.82
1.56
2.27
1.19
1.5
1.6
1.67
1.73
0.9
1.92
1.87
3.58
4.29
7.55
2.15
8.5
1.91
1.57
1.88
1.67
1.69
1.5
1.85
Headway (sec)
13
7. Headway distribution analysis
Bin Frequency %Frequency %CumulativeFreq Bin Frequency %Frequency %CumulativeFreq
0.00 0 0.000 0.000 0.00 0 0.000 0.000
0.25 0 0.000 0.000 0.25 0 0.000 0.000
0.50 0 0.000 0.000 0.50 0 0.000 0.000
0.75 0 0.000 0.000 0.75 0 0.000 0.000
1.00 6 0.031 0.031 1.00 0 0.000 0.000
1.25 16 0.083 0.114 1.25 1 0.020 0.020
1.50 36 0.187 0.301 1.50 0 0.000 0.020
1.75 52 0.269 0.570 1.75 5 0.100 0.120
2.00 39 0.202 0.772 2.00 1 0.020 0.140
2.25 27 0.140 0.912 2.25 2 0.040 0.180
2.50 10 0.052 0.964 2.50 1 0.020 0.200
2.75 2 0.010 0.974 2.75 3 0.060 0.260
3.00 1 0.005 0.979 3.00 3 0.060 0.320
3.25 1 0.005 0.984 3.25 0 0.000 0.320
3.50 0 0.000 0.984 3.50 3 0.060 0.380
3.75 1 0.005 0.990 3.75 1 0.020 0.400
4.00 0 0.000 0.990 4.00 4 0.080 0.480
4.25 0 0.000 0.990 4.25 3 0.060 0.540
4.50 0 0.000 0.990 4.50 2 0.040 0.580
4.75 1 0.005 0.995 4.75 1 0.020 0.600
5.00 0 0.000 0.995 5.00 0 0.000 0.600
Non-Queued Data
Queued Data
Queue Free-Flow
1.95
1.58
1.82
1.56
2.27
1.19
1.5
1.6
1.67
1.73
0.9
1.92
1.87
3.58
4.29
7.55
2.15
8.5
1.91
1.57
1.88
1.67
1.69
1.5
1.85
Headway (sec)
14
7. Headway distribution analysis
Bin Frequency %Frequency %CumulativeFreq Bin Frequency %Frequency %CumulativeFreq
0.00 0 0.000 0.000 0.00 0 0.000 0.000
0.25 0 0.000 0.000 0.25 0 0.000 0.000
0.50 0 0.000 0.000 0.50 0 0.000 0.000
0.75 0 0.000 0.000 0.75 0 0.000 0.000
1.00 6 0.031 0.031 1.00 0 0.000 0.000
1.25 16 0.083 0.114 1.25 1 0.020 0.020
1.50 36 0.187 0.301 1.50 0 0.000 0.020
1.75 52 0.269 0.570 1.75 5 0.100 0.120
2.00 39 0.202 0.772 2.00 1 0.020 0.140
2.25 27 0.140 0.912 2.25 2 0.040 0.180
2.50 10 0.052 0.964 2.50 1 0.020 0.200
2.75 2 0.010 0.974 2.75 3 0.060 0.260
3.00 1 0.005 0.979 3.00 3 0.060 0.320
3.25 1 0.005 0.984 3.25 0 0.000 0.320
3.50 0 0.000 0.984 3.50 3 0.060 0.380
3.75 1 0.005 0.990 3.75 1 0.020 0.400
4.00 0 0.000 0.990 4.00 4 0.080 0.480
4.25 0 0.000 0.990 4.25 3 0.060 0.540
4.50 0 0.000 0.990 4.50 2 0.040 0.580
4.75 1 0.005 0.995 4.75 1 0.020 0.600
5.00 0 0.000 0.995 5.00 0 0.000 0.600
Non-Queued Data
Queued Data
0.0
0.1
0.2
0.3
0.4
0.5
0 1 2 3 4 5 6 7 8 9 10
Frequency
Headway (sec)
Headway Frequency
Queued Headway Free-flow Headway
Queue Free-Flow
1.95
1.58
1.82
1.56
2.27
1.19
1.5
1.6
1.67
1.73
0.9
1.92
1.87
3.58
4.29
7.55
2.15
8.5
1.91
1.57
1.88
1.67
1.69
1.5
1.85
Headway (sec)
15
7. Headway distribution analysis
Bin Frequency %Frequency %CumulativeFreq Bin Frequency %Frequency %CumulativeFreq
0.00 0 0.000 0.000 0.00 0 0.000 0.000
0.25 0 0.000 0.000 0.25 0 0.000 0.000
0.50 0 0.000 0.000 0.50 0 0.000 0.000
0.75 0 0.000 0.000 0.75 0 0.000 0.000
1.00 6 0.031 0.031 1.00 0 0.000 0.000
1.25 16 0.083 0.114 1.25 1 0.020 0.020
1.50 36 0.187 0.301 1.50 0 0.000 0.020
1.75 52 0.269 0.570 1.75 5 0.100 0.120
2.00 39 0.202 0.772 2.00 1 0.020 0.140
2.25 27 0.140 0.912 2.25 2 0.040 0.180
2.50 10 0.052 0.964 2.50 1 0.020 0.200
2.75 2 0.010 0.974 2.75 3 0.060 0.260
3.00 1 0.005 0.979 3.00 3 0.060 0.320
3.25 1 0.005 0.984 3.25 0 0.000 0.320
3.50 0 0.000 0.984 3.50 3 0.060 0.380
3.75 1 0.005 0.990 3.75 1 0.020 0.400
4.00 0 0.000 0.990 4.00 4 0.080 0.480
4.25 0 0.000 0.990 4.25 3 0.060 0.540
4.50 0 0.000 0.990 4.50 2 0.040 0.580
4.75 1 0.005 0.995 4.75 1 0.020 0.600
5.00 0 0.000 0.995 5.00 0 0.000 0.600
Non-Queued Data
Queued Data
0.0
0.1
0.2
0.3
0.4
0.5
0 1 2 3 4 5 6 7 8 9 10
Frequency
Headway (sec)
Headway Frequency
Queued Headway Free-flow Headway
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00
Frequency
Headway (sec)
Cumulative Headway Frequency
Queued Headway Free-flow Headway
16
8. Phase termination analysis
Queued NonQueued Ideal Signal Display Change Occurs Type 1 Type 3 Type 2
2.28 Green
1.57 Green
1.35 Green
1.38 Green
1.42 Green
1.84 Green
1.54 Green
1.24 Green
1.41 Green
2.52 Red Change 1
1.47 Red
3.62 Red
7.89 Red
3.66 Red
1.98 Red
Headway (sec) Signal Information Termination Outcomes
17
8. Phase termination analysis
Queued NonQueued Ideal Signal Display Change Occurs Type 1 Type 3 Type 2
2.28 Green
1.57 Green
1.35 Green
1.38 Green
1.42 Green
1.84 Green
1.54 Green
1.24 Green
1.41 Green
2.52 Red Change 1
1.47 Red
3.62 Red
7.89 Red
3.66 Red
1.98 Red
Headway (sec) Signal Information Termination Outcomes
Type 1 Termination 20
Type 3 Termination 2
Type 2 Termination 10
Outcome Distribution
Headway 0.5 1.0 1.5 2.0 2.5 3.0
Percentile 98.4% 1.6% 39.0% 77.3% 93.6% 98.4%
Type 1 Termination 24 24 23 20 13 4
Type 3 Termination 3 3 3 2 5 9
Type 2 Termination 5 5 6 10 14 19
Results of Phase Termination Analysis
18
0
1
2
3
4
5
360 380 400 420 440
0
1
2
3
4
5
535 555 575 595 615
0
1
2
3
4
5
705 725 745 765 785
Headway,
sec
Time
0
1
2
3
4
5
360 380 400 420 440
0
1
2
3
4
5
535 555 575 595 615
0
1
2
3
4
5
705 725 745 765 785
19
Headway,
sec
Time
Queue Free-Flow
1.95
1.58
1.82
1.56
2.27
1.19
1.5
1.6
1.67
1.73
0.9
1.92
1.87
3.58
4.29
7.55
2.15
8.5
1.91
1.57
1.88
1.67
1.69
1.5
1.85
Headway (sec)
20
7. Headway distribution analysis
Bin Frequency %Frequency %CumulativeFreq Bin Frequency %Frequency %CumulativeFreq
0.00 0 0.000 0.000 0.00 0 0.000 0.000
0.25 0 0.000 0.000 0.25 0 0.000 0.000
0.50 0 0.000 0.000 0.50 0 0.000 0.000
0.75 0 0.000 0.000 0.75 0 0.000 0.000
1.00 6 0.031 0.031 1.00 0 0.000 0.000
1.25 16 0.083 0.114 1.25 1 0.020 0.020
1.50 36 0.187 0.301 1.50 0 0.000 0.020
1.75 52 0.269 0.570 1.75 5 0.100 0.120
2.00 39 0.202 0.772 2.00 1 0.020 0.140
2.25 27 0.140 0.912 2.25 2 0.040 0.180
2.50 10 0.052 0.964 2.50 1 0.020 0.200
2.75 2 0.010 0.974 2.75 3 0.060 0.260
3.00 1 0.005 0.979 3.00 3 0.060 0.320
3.25 1 0.005 0.984 3.25 0 0.000 0.320
3.50 0 0.000 0.984 3.50 3 0.060 0.380
3.75 1 0.005 0.990 3.75 1 0.020 0.400
4.00 0 0.000 0.990 4.00 4 0.080 0.480
4.25 0 0.000 0.990 4.25 3 0.060 0.540
4.50 0 0.000 0.990 4.50 2 0.040 0.580
4.75 1 0.005 0.995 4.75 1 0.020 0.600
5.00 0 0.000 0.995 5.00 0 0.000 0.600
Non-Queued Data
Queued Data
0.0
0.1
0.2
0.3
0.4
0.5
0 1 2 3 4 5 6 7 8 9 10
Frequency
Headway (sec)
Headway Frequency
Queued Headway Free-flow Headway
Queue Free-Flow
1.95
1.58
1.82
1.56
2.27
1.19
1.5
1.6
1.67
1.73
0.9
1.92
1.87
3.58
4.29
7.55
2.15
8.5
1.91
1.57
1.88
1.67
1.69
1.5
1.85
Headway (sec)
21
7. Headway distribution analysis
Bin Frequency %Frequency %CumulativeFreq Bin Frequency %Frequency %CumulativeFreq
0.00 0 0.000 0.000 0.00 0 0.000 0.000
0.25 0 0.000 0.000 0.25 0 0.000 0.000
0.50 0 0.000 0.000 0.50 0 0.000 0.000
0.75 0 0.000 0.000 0.75 0 0.000 0.000
1.00 6 0.031 0.031 1.00 0 0.000 0.000
1.25 16 0.083 0.114 1.25 1 0.020 0.020
1.50 36 0.187 0.301 1.50 0 0.000 0.020
1.75 52 0.269 0.570 1.75 5 0.100 0.120
2.00 39 0.202 0.772 2.00 1 0.020 0.140
2.25 27 0.140 0.912 2.25 2 0.040 0.180
2.50 10 0.052 0.964 2.50 1 0.020 0.200
2.75 2 0.010 0.974 2.75 3 0.060 0.260
3.00 1 0.005 0.979 3.00 3 0.060 0.320
3.25 1 0.005 0.984 3.25 0 0.000 0.320
3.50 0 0.000 0.984 3.50 3 0.060 0.380
3.75 1 0.005 0.990 3.75 1 0.020 0.400
4.00 0 0.000 0.990 4.00 4 0.080 0.480
4.25 0 0.000 0.990 4.25 3 0.060 0.540
4.50 0 0.000 0.990 4.50 2 0.040 0.580
4.75 1 0.005 0.995 4.75 1 0.020 0.600
5.00 0 0.000 0.995 5.00 0 0.000 0.600
Non-Queued Data
Queued Data
0.0
0.1
0.2
0.3
0.4
0.5
0 1 2 3 4 5 6 7 8 9 10
Frequency
Headway (sec)
Headway Frequency
Queued Headway Free-flow Headway
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00
Frequency
Headway (sec)
Cumulative Headway Frequency
Queued Headway Free-flow Headway
22
8. Phase termination analysis
Queued NonQueued Ideal Signal Display Change Occurs Type 1 Type 3 Type 2
2.28 Green
1.57 Green
1.35 Green
1.38 Green
1.42 Green
1.84 Green
1.54 Green
1.24 Green
1.41 Green
2.52 Red Change 1
1.47 Red
3.62 Red
7.89 Red
3.66 Red
1.98 Red
Headway (sec) Signal Information Termination Outcomes
23
8. Phase termination analysis
Queued NonQueued Ideal Signal Display Change Occurs Type 1 Type 3 Type 2
2.28 Green
1.57 Green
1.35 Green
1.38 Green
1.42 Green
1.84 Green
1.54 Green
1.24 Green
1.41 Green
2.52 Red Change 1
1.47 Red
3.62 Red
7.89 Red
3.66 Red
1.98 Red
Headway (sec) Signal Information Termination Outcomes
Type 1 Termination 20
Type 3 Termination 2
Type 2 Termination 10
Outcome Distribution
Headway 0.5 1.0 1.5 2.0 2.5 3.0
Percentile 98.4% 1.6% 39.0% 77.3% 93.6% 98.4%
Type 1 Termination 24 24 23 20 13 4
Type 3 Termination 3 3 3 2 5 9
Type 2 Termination 5 5 6 10 14 19
Results of Phase Termination Analysis
24
0
1
2
3
4
5
360 380 400 420 440
0
1
2
3
4
5
535 555 575 595 615
0
1
2
3
4
5
705 725 745 765 785
Headway,
sec
Time
0
1
2
3
4
5
360 380 400 420 440
0
1
2
3
4
5
535 555 575 595 615
0
1
2
3
4
5
705 725 745 765 785
25
Headway,
sec
Time
0
1
2
3
4
5
360 380 400 420 440
0
1
2
3
4
5
535 555 575 595 615
0
1
2
3
4
5
705 725 745 765 785
26
Type 2:
Green
extends
too long
Headway,
sec
Time
0
1
2
3
4
5
360 380 400 420 440
0
1
2
3
4
5
535 555 575 595 615
0
1
2
3
4
5
705 725 745 765 785
27
Type 1:
Green
ends too
early
Headway,
sec
Time
0
1
2
3
4
5
360 380 400 420 440
0
1
2
3
4
5
535 555 575 595 615
0
1
2
3
4
5
705 725 745 765 785
28
Type 1:
Green
ends too
early
Type 2:
Green
extends
too long
Headway,
sec
Time
29
Example correction to instructions 57.04
2.32
1.94
1.57
1.65
1.83
2.11
1.42
1.1
1.9
1.4
1.45
1.41 1.74
2.81
8.93
2.72
2.14
2.22
6.04
2.61
7.2
58.54
2.05
1.6
3.77
2.16
1.07
4.39
2.13
1.65
4.07
1.12
1.78
1.91
Here is an example of two
consecutive sets of queued
and non-queued data ready
for the “phase termination
analysis”.
First
cycle
Second
cycle
Queue Free-Flow
1.95
1.58
1.82
1.56
2.27
1.19
1.5
1.6
1.67
1.73
0.9
1.92
1.87
3.58
4.29
7.55
2.15
8.5
1.91
1.57
1.88
1.67
1.69
1.5
1.85
Headway (sec)
30
7. Headway distribution analysis
Bin Frequency %Frequency %CumulativeFreq Bin Frequency %Frequency %CumulativeFreq
0.00 0 0.000 0.000 0.00 0 0.000 0.000
0.25 0 0.000 0.000 0.25 0 0.000 0.000
0.50 0 0.000 0.000 0.50 0 0.000 0.000
0.75 0 0.000 0.000 0.75 0 0.000 0.000
1.00 6 0.031 0.031 1.00 0 0.000 0.000
1.25 16 0.083 0.114 1.25 1 0.020 0.020
1.50 36 0.187 0.301 1.50 0 0.000 0.020
1.75 52 0.269 0.570 1.75 5 0.100 0.120
2.00 39 0.202 0.772 2.00 1 0.020 0.140
2.25 27 0.140 0.912 2.25 2 0.040 0.180
2.50 10 0.052 0.964 2.50 1 0.020 0.200
2.75 2 0.010 0.974 2.75 3 0.060 0.260
3.00 1 0.005 0.979 3.00 3 0.060 0.320
3.25 1 0.005 0.984 3.25 0 0.000 0.320
3.50 0 0.000 0.984 3.50 3 0.060 0.380
3.75 1 0.005 0.990 3.75 1 0.020 0.400
4.00 0 0.000 0.990 4.00 4 0.080 0.480
4.25 0 0.000 0.990 4.25 3 0.060 0.540
4.50 0 0.000 0.990 4.50 2 0.040 0.580
4.75 1 0.005 0.995 4.75 1 0.020 0.600
5.00 0 0.000 0.995 5.00 0 0.000 0.600
Non-Queued Data
Queued Data
0.0
0.1
0.2
0.3
0.4
0.5
0 1 2 3 4 5 6 7 8 9 10
Frequency
Headway (sec)
Headway Frequency
Queued Headway Free-flow Headway
Queue Free-Flow
1.95
1.58
1.82
1.56
2.27
1.19
1.5
1.6
1.67
1.73
0.9
1.92
1.87
3.58
4.29
7.55
2.15
8.5
1.91
1.57
1.88
1.67
1.69
1.5
1.85
Headway (sec)
31
7. Headway distribution analysis
Bin Frequency %Frequency %CumulativeFreq Bin Frequency %Frequency %CumulativeFreq
0.00 0 0.000 0.000 0.00 0 0.000 0.000
0.25 0 0.000 0.000 0.25 0 0.000 0.000
0.50 0 0.000 0.000 0.50 0 0.000 0.000
0.75 0 0.000 0.000 0.75 0 0.000 0.000
1.00 6 0.031 0.031 1.00 0 0.000 0.000
1.25 16 0.083 0.114 1.25 1 0.020 0.020
1.50 36 0.187 0.301 1.50 0 0.000 0.020
1.75 52 0.269 0.570 1.75 5 0.100 0.120
2.00 39 0.202 0.772 2.00 1 0.020 0.140
2.25 27 0.140 0.912 2.25 2 0.040 0.180
2.50 10 0.052 0.964 2.50 1 0.020 0.200
2.75 2 0.010 0.974 2.75 3 0.060 0.260
3.00 1 0.005 0.979 3.00 3 0.060 0.320
3.25 1 0.005 0.984 3.25 0 0.000 0.320
3.50 0 0.000 0.984 3.50 3 0.060 0.380
3.75 1 0.005 0.990 3.75 1 0.020 0.400
4.00 0 0.000 0.990 4.00 4 0.080 0.480
4.25 0 0.000 0.990 4.25 3 0.060 0.540
4.50 0 0.000 0.990 4.50 2 0.040 0.580
4.75 1 0.005 0.995 4.75 1 0.020 0.600
5.00 0 0.000 0.995 5.00 0 0.000 0.600
Non-Queued Data
Queued Data
0.0
0.1
0.2
0.3
0.4
0.5
0 1 2 3 4 5 6 7 8 9 10
Frequency
Headway (sec)
Headway Frequency
Queued Headway Free-flow Headway
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00
Frequency
Headway (sec)
Cumulative Headway Frequency
Queued Headway Free-flow Headway
32
8. Phase termination analysis
Queued NonQueued Ideal Signal Display Change Occurs Type 1 Type 3 Type 2
2.28 Green
1.57 Green
1.35 Green
1.38 Green
1.42 Green
1.84 Green
1.54 Green
1.24 Green
1.41 Green
2.52 Red Change 1
1.47 Red
3.62 Red
7.89 Red
3.66 Red
1.98 Red
Headway (sec) Signal Information Termination Outcomes
33
8. Phase termination analysis
Queued NonQueued Ideal Signal Display Change Occurs Type 1 Type 3 Type 2
2.28 Green
1.57 Green
1.35 Green
1.38 Green
1.42 Green
1.84 Green
1.54 Green
1.24 Green
1.41 Green
2.52 Red Change 1
1.47 Red
3.62 Red
7.89 Red
3.66 Red
1.98 Red
Headway (sec) Signal Information Termination Outcomes
Type 1 Termination 20
Type 3 Termination 2
Type 2 Termination 10
Outcome Distribution
Headway 0.5 1.0 1.5 2.0 2.5 3.0
Percentile 98.4% 1.6% 39.0% 77.3% 93.6% 98.4%
Type 1 Termination 24 24 23 20 13 4
Type 3 Termination 3 3 3 2 5 9
Type 2 Termination 5 5 6 10 14 19
Results of Phase Termination Analysis
34
0
1
2
3
4
5
360 380 400 420 440
0
1
2
3
4
5
535 555 575 595 615
0
1
2
3
4
5
705 725 745 765 785
Headway,
sec
Time
0
1
2
3
4
5
360 380 400 420 440
0
1
2
3
4
5
535 555 575 595 615
0
1
2
3
4
5
705 725 745 765 785
35
Headway,
sec
Time
0
1
2
3
4
5
360 380 400 420 440
0
1
2
3
4
5
535 555 575 595 615
0
1
2
3
4
5
705 725 745 765 785
36
Type 2:
Green
extends
too long
Headway,
sec
Time
0
1
2
3
4
5
360 380 400 420 440
0
1
2
3
4
5
535 555 575 595 615
0
1
2
3
4
5
705 725 745 765 785
37
Type 1:
Green
ends too
early
Headway,
sec
Time
0
1
2
3
4
5
360 380 400 420 440
0
1
2
3
4
5
535 555 575 595 615
0
1
2
3
4
5
705 725 745 765 785
38
Type 1:
Green
ends too
early
Type 2:
Green
extends
too long
Headway,
sec
Time
39
Example correction to instructions 57.04
2.32
1.94
1.57
1.65
1.83
2.11
1.42
1.1
1.9
1.4
1.45
1.41 1.74
2.81
8.93
2.72
2.14
2.22
6.04
2.61
7.2
58.54
2.05
1.6
3.77
2.16
1.07
4.39
2.13
1.65
4.07
1.12
1.78
1.91
Here is an example of two
consecutive sets of queued
and non-queued data ready
for the “phase termination
analysis”.
First
cycle
Second
cycle
40
Example correction to instructions 57.04
2.32
1.94
1.57
1.65
1.83
2.11
1.42
1.1
1.9
1.4
1.45
1.41 1.74
2.81
8.93
2.72
2.14
2.22
6.04
2.61
7.2
58.54
2.05
1.6
3.77
2.16
1.07
4.39
2.13
1.65
4.07
1.12
1.78
1.91
Note that the first two
“queued” headways (in red
boxes) are large. These are
actually not realistically
headways as they really
represent the time from the
last vehicle departing from
the previous cycle to the first
vehicle departing from the
current cycle.
First
cycle
Second
cycle
41
Example correction to instructions
2.32
1.94
1.57
1.65
1.83
2.11
1.42
1.1
1.9
1.4
1.45
1.41 1.74
2.81
8.93
2.72
2.14
2.22
6.04
2.61
7.2
2.05
1.6
3.77
2.16
1.07
4.39
2.13
1.65
4.07
1.12
1.78
1.91
In this figure, we’ve now
eliminated these two very
large headways.

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slides36.pptx

  • 1. 1
  • 4. t(leave) VehNo Headway 67.1 3 67.1 69.2 15 2.2 70.8 20 1.6 72.8 23 2.0 74.1 31 1.2 76.4 36 2.3 78.2 40 1.8 80.1 44 1.9 87.9 52 7.7 1. Overview 4
  • 5. 0.0 0.1 0.1 0.2 0.2 0.3 0.3 0 1 2 3 4 5 6 7 8 9 10 Frequency Headway (sec) Headway Frequency Queued Headway Free-flow Headway 1. Overview 5
  • 6. 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 1 2 3 4 5 6 7 8 9 10 Frequency Headway (sec) Cumulative Headway Frequency Queued Headway Free-flow Headway 1. Overview 6
  • 7. 2. Initial Steps Activity #28 Activity #36 Activity #37 Create new folder 7
  • 11. 11 6. MER file – identify Queued and Non-Queued vehicles Data C.P. t(leave) tQueue Q/NQ Headway 1 363.12 61.1 Q 1 365.4 47.4 Q 2.28 1 366.97 44 Q 1.57 1 368.32 29 Q 1.35 1 369.7 15.5 Q 1.38 1 371.12 29.4 Q 1.42 1 372.96 23 Q 1.84 1 374.5 22.9 Q 1.54 1 375.74 12.6 Q 1.24 1 377.15 0 NQ 1.41 1 379.67 0 NQ 2.52 1 381.14 0 NQ 1.47 Data Collection Point 1
  • 13. Queue Free-Flow 1.95 1.58 1.82 1.56 2.27 1.19 1.5 1.6 1.67 1.73 0.9 1.92 1.87 3.58 4.29 7.55 2.15 8.5 1.91 1.57 1.88 1.67 1.69 1.5 1.85 Headway (sec) 13 7. Headway distribution analysis Bin Frequency %Frequency %CumulativeFreq Bin Frequency %Frequency %CumulativeFreq 0.00 0 0.000 0.000 0.00 0 0.000 0.000 0.25 0 0.000 0.000 0.25 0 0.000 0.000 0.50 0 0.000 0.000 0.50 0 0.000 0.000 0.75 0 0.000 0.000 0.75 0 0.000 0.000 1.00 6 0.031 0.031 1.00 0 0.000 0.000 1.25 16 0.083 0.114 1.25 1 0.020 0.020 1.50 36 0.187 0.301 1.50 0 0.000 0.020 1.75 52 0.269 0.570 1.75 5 0.100 0.120 2.00 39 0.202 0.772 2.00 1 0.020 0.140 2.25 27 0.140 0.912 2.25 2 0.040 0.180 2.50 10 0.052 0.964 2.50 1 0.020 0.200 2.75 2 0.010 0.974 2.75 3 0.060 0.260 3.00 1 0.005 0.979 3.00 3 0.060 0.320 3.25 1 0.005 0.984 3.25 0 0.000 0.320 3.50 0 0.000 0.984 3.50 3 0.060 0.380 3.75 1 0.005 0.990 3.75 1 0.020 0.400 4.00 0 0.000 0.990 4.00 4 0.080 0.480 4.25 0 0.000 0.990 4.25 3 0.060 0.540 4.50 0 0.000 0.990 4.50 2 0.040 0.580 4.75 1 0.005 0.995 4.75 1 0.020 0.600 5.00 0 0.000 0.995 5.00 0 0.000 0.600 Non-Queued Data Queued Data
  • 14. Queue Free-Flow 1.95 1.58 1.82 1.56 2.27 1.19 1.5 1.6 1.67 1.73 0.9 1.92 1.87 3.58 4.29 7.55 2.15 8.5 1.91 1.57 1.88 1.67 1.69 1.5 1.85 Headway (sec) 14 7. Headway distribution analysis Bin Frequency %Frequency %CumulativeFreq Bin Frequency %Frequency %CumulativeFreq 0.00 0 0.000 0.000 0.00 0 0.000 0.000 0.25 0 0.000 0.000 0.25 0 0.000 0.000 0.50 0 0.000 0.000 0.50 0 0.000 0.000 0.75 0 0.000 0.000 0.75 0 0.000 0.000 1.00 6 0.031 0.031 1.00 0 0.000 0.000 1.25 16 0.083 0.114 1.25 1 0.020 0.020 1.50 36 0.187 0.301 1.50 0 0.000 0.020 1.75 52 0.269 0.570 1.75 5 0.100 0.120 2.00 39 0.202 0.772 2.00 1 0.020 0.140 2.25 27 0.140 0.912 2.25 2 0.040 0.180 2.50 10 0.052 0.964 2.50 1 0.020 0.200 2.75 2 0.010 0.974 2.75 3 0.060 0.260 3.00 1 0.005 0.979 3.00 3 0.060 0.320 3.25 1 0.005 0.984 3.25 0 0.000 0.320 3.50 0 0.000 0.984 3.50 3 0.060 0.380 3.75 1 0.005 0.990 3.75 1 0.020 0.400 4.00 0 0.000 0.990 4.00 4 0.080 0.480 4.25 0 0.000 0.990 4.25 3 0.060 0.540 4.50 0 0.000 0.990 4.50 2 0.040 0.580 4.75 1 0.005 0.995 4.75 1 0.020 0.600 5.00 0 0.000 0.995 5.00 0 0.000 0.600 Non-Queued Data Queued Data 0.0 0.1 0.2 0.3 0.4 0.5 0 1 2 3 4 5 6 7 8 9 10 Frequency Headway (sec) Headway Frequency Queued Headway Free-flow Headway
  • 15. Queue Free-Flow 1.95 1.58 1.82 1.56 2.27 1.19 1.5 1.6 1.67 1.73 0.9 1.92 1.87 3.58 4.29 7.55 2.15 8.5 1.91 1.57 1.88 1.67 1.69 1.5 1.85 Headway (sec) 15 7. Headway distribution analysis Bin Frequency %Frequency %CumulativeFreq Bin Frequency %Frequency %CumulativeFreq 0.00 0 0.000 0.000 0.00 0 0.000 0.000 0.25 0 0.000 0.000 0.25 0 0.000 0.000 0.50 0 0.000 0.000 0.50 0 0.000 0.000 0.75 0 0.000 0.000 0.75 0 0.000 0.000 1.00 6 0.031 0.031 1.00 0 0.000 0.000 1.25 16 0.083 0.114 1.25 1 0.020 0.020 1.50 36 0.187 0.301 1.50 0 0.000 0.020 1.75 52 0.269 0.570 1.75 5 0.100 0.120 2.00 39 0.202 0.772 2.00 1 0.020 0.140 2.25 27 0.140 0.912 2.25 2 0.040 0.180 2.50 10 0.052 0.964 2.50 1 0.020 0.200 2.75 2 0.010 0.974 2.75 3 0.060 0.260 3.00 1 0.005 0.979 3.00 3 0.060 0.320 3.25 1 0.005 0.984 3.25 0 0.000 0.320 3.50 0 0.000 0.984 3.50 3 0.060 0.380 3.75 1 0.005 0.990 3.75 1 0.020 0.400 4.00 0 0.000 0.990 4.00 4 0.080 0.480 4.25 0 0.000 0.990 4.25 3 0.060 0.540 4.50 0 0.000 0.990 4.50 2 0.040 0.580 4.75 1 0.005 0.995 4.75 1 0.020 0.600 5.00 0 0.000 0.995 5.00 0 0.000 0.600 Non-Queued Data Queued Data 0.0 0.1 0.2 0.3 0.4 0.5 0 1 2 3 4 5 6 7 8 9 10 Frequency Headway (sec) Headway Frequency Queued Headway Free-flow Headway 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 Frequency Headway (sec) Cumulative Headway Frequency Queued Headway Free-flow Headway
  • 16. 16 8. Phase termination analysis Queued NonQueued Ideal Signal Display Change Occurs Type 1 Type 3 Type 2 2.28 Green 1.57 Green 1.35 Green 1.38 Green 1.42 Green 1.84 Green 1.54 Green 1.24 Green 1.41 Green 2.52 Red Change 1 1.47 Red 3.62 Red 7.89 Red 3.66 Red 1.98 Red Headway (sec) Signal Information Termination Outcomes
  • 17. 17 8. Phase termination analysis Queued NonQueued Ideal Signal Display Change Occurs Type 1 Type 3 Type 2 2.28 Green 1.57 Green 1.35 Green 1.38 Green 1.42 Green 1.84 Green 1.54 Green 1.24 Green 1.41 Green 2.52 Red Change 1 1.47 Red 3.62 Red 7.89 Red 3.66 Red 1.98 Red Headway (sec) Signal Information Termination Outcomes Type 1 Termination 20 Type 3 Termination 2 Type 2 Termination 10 Outcome Distribution Headway 0.5 1.0 1.5 2.0 2.5 3.0 Percentile 98.4% 1.6% 39.0% 77.3% 93.6% 98.4% Type 1 Termination 24 24 23 20 13 4 Type 3 Termination 3 3 3 2 5 9 Type 2 Termination 5 5 6 10 14 19 Results of Phase Termination Analysis
  • 18. 18 0 1 2 3 4 5 360 380 400 420 440 0 1 2 3 4 5 535 555 575 595 615 0 1 2 3 4 5 705 725 745 765 785 Headway, sec Time
  • 19. 0 1 2 3 4 5 360 380 400 420 440 0 1 2 3 4 5 535 555 575 595 615 0 1 2 3 4 5 705 725 745 765 785 19 Headway, sec Time
  • 20. Queue Free-Flow 1.95 1.58 1.82 1.56 2.27 1.19 1.5 1.6 1.67 1.73 0.9 1.92 1.87 3.58 4.29 7.55 2.15 8.5 1.91 1.57 1.88 1.67 1.69 1.5 1.85 Headway (sec) 20 7. Headway distribution analysis Bin Frequency %Frequency %CumulativeFreq Bin Frequency %Frequency %CumulativeFreq 0.00 0 0.000 0.000 0.00 0 0.000 0.000 0.25 0 0.000 0.000 0.25 0 0.000 0.000 0.50 0 0.000 0.000 0.50 0 0.000 0.000 0.75 0 0.000 0.000 0.75 0 0.000 0.000 1.00 6 0.031 0.031 1.00 0 0.000 0.000 1.25 16 0.083 0.114 1.25 1 0.020 0.020 1.50 36 0.187 0.301 1.50 0 0.000 0.020 1.75 52 0.269 0.570 1.75 5 0.100 0.120 2.00 39 0.202 0.772 2.00 1 0.020 0.140 2.25 27 0.140 0.912 2.25 2 0.040 0.180 2.50 10 0.052 0.964 2.50 1 0.020 0.200 2.75 2 0.010 0.974 2.75 3 0.060 0.260 3.00 1 0.005 0.979 3.00 3 0.060 0.320 3.25 1 0.005 0.984 3.25 0 0.000 0.320 3.50 0 0.000 0.984 3.50 3 0.060 0.380 3.75 1 0.005 0.990 3.75 1 0.020 0.400 4.00 0 0.000 0.990 4.00 4 0.080 0.480 4.25 0 0.000 0.990 4.25 3 0.060 0.540 4.50 0 0.000 0.990 4.50 2 0.040 0.580 4.75 1 0.005 0.995 4.75 1 0.020 0.600 5.00 0 0.000 0.995 5.00 0 0.000 0.600 Non-Queued Data Queued Data 0.0 0.1 0.2 0.3 0.4 0.5 0 1 2 3 4 5 6 7 8 9 10 Frequency Headway (sec) Headway Frequency Queued Headway Free-flow Headway
  • 21. Queue Free-Flow 1.95 1.58 1.82 1.56 2.27 1.19 1.5 1.6 1.67 1.73 0.9 1.92 1.87 3.58 4.29 7.55 2.15 8.5 1.91 1.57 1.88 1.67 1.69 1.5 1.85 Headway (sec) 21 7. Headway distribution analysis Bin Frequency %Frequency %CumulativeFreq Bin Frequency %Frequency %CumulativeFreq 0.00 0 0.000 0.000 0.00 0 0.000 0.000 0.25 0 0.000 0.000 0.25 0 0.000 0.000 0.50 0 0.000 0.000 0.50 0 0.000 0.000 0.75 0 0.000 0.000 0.75 0 0.000 0.000 1.00 6 0.031 0.031 1.00 0 0.000 0.000 1.25 16 0.083 0.114 1.25 1 0.020 0.020 1.50 36 0.187 0.301 1.50 0 0.000 0.020 1.75 52 0.269 0.570 1.75 5 0.100 0.120 2.00 39 0.202 0.772 2.00 1 0.020 0.140 2.25 27 0.140 0.912 2.25 2 0.040 0.180 2.50 10 0.052 0.964 2.50 1 0.020 0.200 2.75 2 0.010 0.974 2.75 3 0.060 0.260 3.00 1 0.005 0.979 3.00 3 0.060 0.320 3.25 1 0.005 0.984 3.25 0 0.000 0.320 3.50 0 0.000 0.984 3.50 3 0.060 0.380 3.75 1 0.005 0.990 3.75 1 0.020 0.400 4.00 0 0.000 0.990 4.00 4 0.080 0.480 4.25 0 0.000 0.990 4.25 3 0.060 0.540 4.50 0 0.000 0.990 4.50 2 0.040 0.580 4.75 1 0.005 0.995 4.75 1 0.020 0.600 5.00 0 0.000 0.995 5.00 0 0.000 0.600 Non-Queued Data Queued Data 0.0 0.1 0.2 0.3 0.4 0.5 0 1 2 3 4 5 6 7 8 9 10 Frequency Headway (sec) Headway Frequency Queued Headway Free-flow Headway 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 Frequency Headway (sec) Cumulative Headway Frequency Queued Headway Free-flow Headway
  • 22. 22 8. Phase termination analysis Queued NonQueued Ideal Signal Display Change Occurs Type 1 Type 3 Type 2 2.28 Green 1.57 Green 1.35 Green 1.38 Green 1.42 Green 1.84 Green 1.54 Green 1.24 Green 1.41 Green 2.52 Red Change 1 1.47 Red 3.62 Red 7.89 Red 3.66 Red 1.98 Red Headway (sec) Signal Information Termination Outcomes
  • 23. 23 8. Phase termination analysis Queued NonQueued Ideal Signal Display Change Occurs Type 1 Type 3 Type 2 2.28 Green 1.57 Green 1.35 Green 1.38 Green 1.42 Green 1.84 Green 1.54 Green 1.24 Green 1.41 Green 2.52 Red Change 1 1.47 Red 3.62 Red 7.89 Red 3.66 Red 1.98 Red Headway (sec) Signal Information Termination Outcomes Type 1 Termination 20 Type 3 Termination 2 Type 2 Termination 10 Outcome Distribution Headway 0.5 1.0 1.5 2.0 2.5 3.0 Percentile 98.4% 1.6% 39.0% 77.3% 93.6% 98.4% Type 1 Termination 24 24 23 20 13 4 Type 3 Termination 3 3 3 2 5 9 Type 2 Termination 5 5 6 10 14 19 Results of Phase Termination Analysis
  • 24. 24 0 1 2 3 4 5 360 380 400 420 440 0 1 2 3 4 5 535 555 575 595 615 0 1 2 3 4 5 705 725 745 765 785 Headway, sec Time
  • 25. 0 1 2 3 4 5 360 380 400 420 440 0 1 2 3 4 5 535 555 575 595 615 0 1 2 3 4 5 705 725 745 765 785 25 Headway, sec Time
  • 26. 0 1 2 3 4 5 360 380 400 420 440 0 1 2 3 4 5 535 555 575 595 615 0 1 2 3 4 5 705 725 745 765 785 26 Type 2: Green extends too long Headway, sec Time
  • 27. 0 1 2 3 4 5 360 380 400 420 440 0 1 2 3 4 5 535 555 575 595 615 0 1 2 3 4 5 705 725 745 765 785 27 Type 1: Green ends too early Headway, sec Time
  • 28. 0 1 2 3 4 5 360 380 400 420 440 0 1 2 3 4 5 535 555 575 595 615 0 1 2 3 4 5 705 725 745 765 785 28 Type 1: Green ends too early Type 2: Green extends too long Headway, sec Time
  • 29. 29 Example correction to instructions 57.04 2.32 1.94 1.57 1.65 1.83 2.11 1.42 1.1 1.9 1.4 1.45 1.41 1.74 2.81 8.93 2.72 2.14 2.22 6.04 2.61 7.2 58.54 2.05 1.6 3.77 2.16 1.07 4.39 2.13 1.65 4.07 1.12 1.78 1.91 Here is an example of two consecutive sets of queued and non-queued data ready for the “phase termination analysis”. First cycle Second cycle
  • 30. Queue Free-Flow 1.95 1.58 1.82 1.56 2.27 1.19 1.5 1.6 1.67 1.73 0.9 1.92 1.87 3.58 4.29 7.55 2.15 8.5 1.91 1.57 1.88 1.67 1.69 1.5 1.85 Headway (sec) 30 7. Headway distribution analysis Bin Frequency %Frequency %CumulativeFreq Bin Frequency %Frequency %CumulativeFreq 0.00 0 0.000 0.000 0.00 0 0.000 0.000 0.25 0 0.000 0.000 0.25 0 0.000 0.000 0.50 0 0.000 0.000 0.50 0 0.000 0.000 0.75 0 0.000 0.000 0.75 0 0.000 0.000 1.00 6 0.031 0.031 1.00 0 0.000 0.000 1.25 16 0.083 0.114 1.25 1 0.020 0.020 1.50 36 0.187 0.301 1.50 0 0.000 0.020 1.75 52 0.269 0.570 1.75 5 0.100 0.120 2.00 39 0.202 0.772 2.00 1 0.020 0.140 2.25 27 0.140 0.912 2.25 2 0.040 0.180 2.50 10 0.052 0.964 2.50 1 0.020 0.200 2.75 2 0.010 0.974 2.75 3 0.060 0.260 3.00 1 0.005 0.979 3.00 3 0.060 0.320 3.25 1 0.005 0.984 3.25 0 0.000 0.320 3.50 0 0.000 0.984 3.50 3 0.060 0.380 3.75 1 0.005 0.990 3.75 1 0.020 0.400 4.00 0 0.000 0.990 4.00 4 0.080 0.480 4.25 0 0.000 0.990 4.25 3 0.060 0.540 4.50 0 0.000 0.990 4.50 2 0.040 0.580 4.75 1 0.005 0.995 4.75 1 0.020 0.600 5.00 0 0.000 0.995 5.00 0 0.000 0.600 Non-Queued Data Queued Data 0.0 0.1 0.2 0.3 0.4 0.5 0 1 2 3 4 5 6 7 8 9 10 Frequency Headway (sec) Headway Frequency Queued Headway Free-flow Headway
  • 31. Queue Free-Flow 1.95 1.58 1.82 1.56 2.27 1.19 1.5 1.6 1.67 1.73 0.9 1.92 1.87 3.58 4.29 7.55 2.15 8.5 1.91 1.57 1.88 1.67 1.69 1.5 1.85 Headway (sec) 31 7. Headway distribution analysis Bin Frequency %Frequency %CumulativeFreq Bin Frequency %Frequency %CumulativeFreq 0.00 0 0.000 0.000 0.00 0 0.000 0.000 0.25 0 0.000 0.000 0.25 0 0.000 0.000 0.50 0 0.000 0.000 0.50 0 0.000 0.000 0.75 0 0.000 0.000 0.75 0 0.000 0.000 1.00 6 0.031 0.031 1.00 0 0.000 0.000 1.25 16 0.083 0.114 1.25 1 0.020 0.020 1.50 36 0.187 0.301 1.50 0 0.000 0.020 1.75 52 0.269 0.570 1.75 5 0.100 0.120 2.00 39 0.202 0.772 2.00 1 0.020 0.140 2.25 27 0.140 0.912 2.25 2 0.040 0.180 2.50 10 0.052 0.964 2.50 1 0.020 0.200 2.75 2 0.010 0.974 2.75 3 0.060 0.260 3.00 1 0.005 0.979 3.00 3 0.060 0.320 3.25 1 0.005 0.984 3.25 0 0.000 0.320 3.50 0 0.000 0.984 3.50 3 0.060 0.380 3.75 1 0.005 0.990 3.75 1 0.020 0.400 4.00 0 0.000 0.990 4.00 4 0.080 0.480 4.25 0 0.000 0.990 4.25 3 0.060 0.540 4.50 0 0.000 0.990 4.50 2 0.040 0.580 4.75 1 0.005 0.995 4.75 1 0.020 0.600 5.00 0 0.000 0.995 5.00 0 0.000 0.600 Non-Queued Data Queued Data 0.0 0.1 0.2 0.3 0.4 0.5 0 1 2 3 4 5 6 7 8 9 10 Frequency Headway (sec) Headway Frequency Queued Headway Free-flow Headway 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 Frequency Headway (sec) Cumulative Headway Frequency Queued Headway Free-flow Headway
  • 32. 32 8. Phase termination analysis Queued NonQueued Ideal Signal Display Change Occurs Type 1 Type 3 Type 2 2.28 Green 1.57 Green 1.35 Green 1.38 Green 1.42 Green 1.84 Green 1.54 Green 1.24 Green 1.41 Green 2.52 Red Change 1 1.47 Red 3.62 Red 7.89 Red 3.66 Red 1.98 Red Headway (sec) Signal Information Termination Outcomes
  • 33. 33 8. Phase termination analysis Queued NonQueued Ideal Signal Display Change Occurs Type 1 Type 3 Type 2 2.28 Green 1.57 Green 1.35 Green 1.38 Green 1.42 Green 1.84 Green 1.54 Green 1.24 Green 1.41 Green 2.52 Red Change 1 1.47 Red 3.62 Red 7.89 Red 3.66 Red 1.98 Red Headway (sec) Signal Information Termination Outcomes Type 1 Termination 20 Type 3 Termination 2 Type 2 Termination 10 Outcome Distribution Headway 0.5 1.0 1.5 2.0 2.5 3.0 Percentile 98.4% 1.6% 39.0% 77.3% 93.6% 98.4% Type 1 Termination 24 24 23 20 13 4 Type 3 Termination 3 3 3 2 5 9 Type 2 Termination 5 5 6 10 14 19 Results of Phase Termination Analysis
  • 34. 34 0 1 2 3 4 5 360 380 400 420 440 0 1 2 3 4 5 535 555 575 595 615 0 1 2 3 4 5 705 725 745 765 785 Headway, sec Time
  • 35. 0 1 2 3 4 5 360 380 400 420 440 0 1 2 3 4 5 535 555 575 595 615 0 1 2 3 4 5 705 725 745 765 785 35 Headway, sec Time
  • 36. 0 1 2 3 4 5 360 380 400 420 440 0 1 2 3 4 5 535 555 575 595 615 0 1 2 3 4 5 705 725 745 765 785 36 Type 2: Green extends too long Headway, sec Time
  • 37. 0 1 2 3 4 5 360 380 400 420 440 0 1 2 3 4 5 535 555 575 595 615 0 1 2 3 4 5 705 725 745 765 785 37 Type 1: Green ends too early Headway, sec Time
  • 38. 0 1 2 3 4 5 360 380 400 420 440 0 1 2 3 4 5 535 555 575 595 615 0 1 2 3 4 5 705 725 745 765 785 38 Type 1: Green ends too early Type 2: Green extends too long Headway, sec Time
  • 39. 39 Example correction to instructions 57.04 2.32 1.94 1.57 1.65 1.83 2.11 1.42 1.1 1.9 1.4 1.45 1.41 1.74 2.81 8.93 2.72 2.14 2.22 6.04 2.61 7.2 58.54 2.05 1.6 3.77 2.16 1.07 4.39 2.13 1.65 4.07 1.12 1.78 1.91 Here is an example of two consecutive sets of queued and non-queued data ready for the “phase termination analysis”. First cycle Second cycle
  • 40. 40 Example correction to instructions 57.04 2.32 1.94 1.57 1.65 1.83 2.11 1.42 1.1 1.9 1.4 1.45 1.41 1.74 2.81 8.93 2.72 2.14 2.22 6.04 2.61 7.2 58.54 2.05 1.6 3.77 2.16 1.07 4.39 2.13 1.65 4.07 1.12 1.78 1.91 Note that the first two “queued” headways (in red boxes) are large. These are actually not realistically headways as they really represent the time from the last vehicle departing from the previous cycle to the first vehicle departing from the current cycle. First cycle Second cycle
  • 41. 41 Example correction to instructions 2.32 1.94 1.57 1.65 1.83 2.11 1.42 1.1 1.9 1.4 1.45 1.41 1.74 2.81 8.93 2.72 2.14 2.22 6.04 2.61 7.2 2.05 1.6 3.77 2.16 1.07 4.39 2.13 1.65 4.07 1.12 1.78 1.91 In this figure, we’ve now eliminated these two very large headways.