intersection analysis

1. Intersection analysis and
data collection using Jamar
counter

2. •
•
•
•
•
Made By
Sajawal Shahzad Bhatti
For Assistance
Sajawal_b@yaoo.com
03217120484

3. Intersection of Jinnah and 9th
avenue

4. Objectives
•
•
•
•
Data collection using Jamar counter.
Calculation of peak hour factor.
Evaluation of level of service.
To create several models for the safety
analysis of signalized intersections
• Analysis of intersection using Petra pro:
•
•
•
•
Plot of turning hour volumes of approaches.
Plot of turning hour volumes of each lane group.
Stop speed study.
Spot speed study.

5. Data collection
The TDC Ultra is
an electronic
hand-held device
that enables you
to do some of the
most common
manual traffic data
collection.
TDC Ultra

6. Bank 1
DO
Each
button
present
a
direction
either
right left
or
through
Bank 2
TAB
Preview
Screen
Can be used
for different
purpose to
classify
different type
of traffic
Volume

7. Functions Of Traffic Data Analyzer
• Standard Turning Movement Studies:
Collect turning movement data while classifying up to 3
groups of vehicles.
• Enhanced Turning Movement Studies
Collect Turning Movement data while classifying up to 14
groups of vehicles.
Collect gap and count data in one direction or two
directions with combined gap.
• Stop Sign Delay Studies
Measure delay and queues at stop sign controlled
intersections.

8. • Signalized Intersection Delay Studies
Measure several vehicle delay parameters at an approach to
a signalized
intersection.
• Spot Speed Studies
Do speed studies to find running speeds on approaches.
• Saturation Flow Rate Studies
Collect Saturation Flow data at signalized intersections.
• Roundabout Movement Studies
Collect movement data at roundabouts while classifying up
to 3 groups of vehicles.
• Time-Stamped Studies
Collect raw data with a time-stamp of every key pressed.

9. About the Device
start-up process

10. start a new count

11. selecting the type of study :
• TM = Standard Turning Movement
• CL = Classification DL = Signalized
Intersection Delay
• GAP = Multi-direction Gap SF = Saturation
Flow Rate
• SD= Stop Sign Delay SS = Spot Speed
• RA = Roundabout TS = Time Stamped
• TC = Enhanced Turning Movement

13. Count Menu

14. Site Code

15. Turning Movement Study

16. choose the interval length

17. Taking off the calculations
Start Study

18. Data format
• Data calculated for three hour (from 9 am
to 12 am.
• Data was collected at Jinnah and 9th
avenue.
• Turning volumes were calculated on basis
of 5min intervals.
• Data was imported to Perta pro form
Jamar counter.

19. Calculating peak hour factor
• Data from the Petrapro was imported to
the excel.
• The graph of turning volumes against time
for the all approaches were plotted.
• Form the graph, different possibilities of
peak hour factor were evaluated.
• After deeply analyzing the graph the peak
hour was obtained.

20. • For this peak hour, the highest 15 min
volume was calculated.
• Calculations were made as follow:
PHF=V/(4 xv15)

21. JANNAH
9TH
From South
From West
Right
Thru
Left
TOTAL
Right
Thru
Left
TOTAL
13
64
19
96
29
96
19
144
11
32
23
66
21
96
22
139
23
92
9
124
12
103
43
158
47
80
33
160
18
115
13
146
42
105
34
181
14
114
21
149
41
77
15
133
38
129
12
179
33
114
40
187
22
163
29
214
42
110
36
188
16
104
20
140
47
87
23
157
28
83
12
123
14
53
12
79
53
57
10
120
6
34
15
55
15
79
15
109
17
74
19
110
10
78
11
99
9
66
10
85
8
28
13
49
9
82
19
110
59
17
15
91
5
29
18
52
57
51
17
125
3
21
10
34
57
21
12
90
8
32
13
53
52
15
14
81
24
32
16
72
31
26
11
68
11
28
13
52
32
19
12
63
8
24
14
46
45
18
14
77
14
14
17
45
33
32
17
82
12
23
16
51
36
22
12
70
10
22
19
51
32
25
13
70
6
21
13
40
29
27
17
73
8
25
12
45
33
28
19
80
9
19
14
42
23
21
21
65
12
18
15
45
27
23
13
63
15
17
10
42
28
21
15
64
13
21
21
55
29
24
12
65
12
22
19
53
36
25
13
74
16
21
18
55
32
21
15
68
17
18
19
54
39
19
17
75
12
19
27
58
31
21
11
63
19
25
22
66
27
25
14
66
16
24
23
63
29
23
12
64
11
28
21
60
31
22
15
68
12
22
23
57
29
21
12
62
627
1595
700
2922
1141
1812
583
3536

22. JANNAH
9TH
From South
From West
Right
Thru
Left
TOTAL
Right
Thru
Left
TOTAL
13
64
19
96
29
96
19
144
11
32
23
66
21
96
22
139
23
92
9
124
12
103
43
158
47
80
33
160
18
115
13
146
42
105
34
181
14
114
21
149
41
77
15
133
38
129
12
179
33
114
40
187
22
163
29
214
42
110
36
188
16
104
20
140
47
87
23
157
28
83
12
123
14
53
12
79
53
57
10
120
6
34
15
55
15
79
15
109
17
74
19
110
10
78
11
99
9
66
10
85
8
28
13
49
9
82
19
110
59
17
15
91
5
29
18
52
57
51
17
125
3
21
10
34
57
21
12
90
8
32
13
53
52
15
14
81
24
32
16
72
31
26
11
68
11
28
13
52
32
19
12
63
8
24
14
46
45
18
14
77
14
14
17
45
33
32
17
82
12
23
16
51
36
22
12
70
10
22
19
51
32
25
13
70
6
21
13
40
29
27
17
73
8
25
12
45
33
28
19
80
9
19
14
42
23
21
21
65
12
18
15
45
27
23
13
63
15
17
10
42
28
21
15
64
13
21
21
55
29
24
12
65
12
22
19
53
36
25
13
74
16
21
18
55
32
21
15
68
17
18
19
54
39
19
17
75
12
19
27
58
31
21
11
63
19
25
22
66
27
25
14
66
16
24
23
63
29
23
12
64
11
28
21
60
31
22
15
68
12
22
23
57
29
21
12
62
627
1595
700
2922
1141
1812
583
3536

24. LOS Of Intersection
Calculating Turning hour Volume
 Protected and permitted Movements
 Phasing
 Lane Grouping
 Summation of Critical flow ratios
 Calculation For min Cycle length
 Finding out Effective Green Time
 Delay of Each Approach


25. Level of service of Separate Lane
Groups
 Delay of intersection
 Level of service of Separate
Approaches
 Level of service of Intersection


26. Approach
NB
SB
WB
EB
Lane group
T
R
T
R
T
R
T
R
Analysis flow rate(v)
veh/h
988
345
726
288
900
218
1245
284
Saturated flow rate(s)
veh/h
5100
1700
5100
1700
5100
1700
5100
1700
Flow rate (v/s)
0.19
0.20
0.14
0.17
0.18
0.13
0.24
0.17
Critical lane group (√)
√
√
√
Yc
√
0.72
Lost time/phase
sec
4
Total lost time
sec
16
Cycle length(Cmin)
sec
78.2109
Xc
Eff. Green Time (g)
0.900
sec
Lane group Capacity ( c )
v/c (X)
d1
sec
12.37
12.37
11.14
11.14
14.52
14.52
0.225
0.158
0.158
0.142
0.142
0.186
0.186
1150.00
383.33
806.67
268.89
726.67
242.22
946.67
315.56
0.86
veh/h
17.64
0.225
g/C
17.64
0.90
0.90
1.07
1.24
0.90
1.32
0.90
30.29
30.288
32.920
33.366
33.534
33.534
34.311
31.847
PF
1
K
0.0833
L
1
T
0.05
d2
sec
1.429
4.644
2.597
14.049
23.431
6.479
29.628
5.360
Lane group delay (d)
sec
31.717
34.932
35.517
47.415
56.965
40.012
63.939
37.207
C
C
D
D
E
D
E
D
Lane group LOS
Approach Delay
sec
Intersection Delay
Intersection LOS
sec
38.896
53.659
58.974
C
Approach LOS
32.549
D
E
E
46.654
D

27. Petra Pro
• Data Analysis Software for Hand-held Data
Recorders
PETRAPro is the software for analyzing data gathered
with the TDC Ultra hand-held data
collectors.
The industry standard for processing turning movement
data, thousands of users have
come to appreciate PETRAPro's stability, ease of use
and comprehensive reporting
capability.

28. • The program allows you to create a variety
of reports and graphs. Finished reports can
also be saved in Acrobat PDF or Text format for
easy electronic transfer. Data can also
be exported into numerous other programs.
Released in 2004, this program replaced the
older PETRA for Windows software, which
was originally introduced in 1998. PETRAPro
offers new features and improvements to
the older PETRA for Windows software

29. Stop speed study for Stop Sign
Delay

30. spot speed study

33. Comparison of

36. Conclusions
• Data was successfully taken from the JAMAR
counting Device and imported to the PETRAPro
Software.
• Peak Hour Factor is calculated and the result is 0.76
• LOS of Lane Groups are NB: T and R as C and C
respectively.
• SB: T and R as D and D, WB:
T and R as E and D, EB: T and R as E and D.

37. Conclusions
• LOS of approaches are as: NB “C”, SB “D”, WB
“E”, EB “E”.
• LOS of the INTERSECTION is calculated to be
“D”.