Robert A. Rescots3-us-west-2.amazonaws.com/modot-pdfs/Robert_Mizzou.pdfat um ence um I-at ence I-at...
Transcript of Robert A. Rescots3-us-west-2.amazonaws.com/modot-pdfs/Robert_Mizzou.pdfat um ence um I-at ence I-at...
![Page 1: Robert A. Rescots3-us-west-2.amazonaws.com/modot-pdfs/Robert_Mizzou.pdfat um ence um I-at ence I-at e e Stadium I-at tadium X X - X-N= 17 Avg. = 17.8 N= 9 Avg. =22.8 N= 6 Avg. = 13.1](https://reader033.fdocuments.in/reader033/viewer/2022050513/5f9d15a72502011f77219e0b/html5/thumbnails/1.jpg)
Robert A. Rescot
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Specification published in 1994
Low power wireless network
Working group of 13,000+ manufacturers
o Cell phones
o Computers
o Printers
o Audio
o Game systems
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Traditional
Capture all or most
vehicles
Short time duration
High cost
Bluetooth
Capture fewer vehicles
Long time duration
Low cost
Quick deployment
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Standard Antenna 200’
Alternate Antennas
o Maximum 320’
o Minimum: 120’
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Std.
Antenna
@6’
Std.
Antenna
@18’
Stub
Antenna
@6’
Stub
Antenna
@18’
Large
Antenna
@6’
Large
Antenna
@18’
30mph 100% 100% 100% 97% 100% 100%
45mph 90% 92% 82% 78% 97% 92%
60mph 93% 95% 87% 80% 97% 80%
Patch
Antenna
@6’
Patch
Antenna
@18’
Sm.Mag.
Antenna
@6’
Sm.Mag.
Antenna
@18’
Lg. Mag.
Antenna
@6’
Lg. Mag.
Antenna
@18’
30mph 63% 77% 85% 85% 92% 93%
45mph 58% 63% 90% 88% 90% 83%
60mph 77% 85% 75% 77% 80% 80%
N = 60 / Test
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Std.
Antenna
@70’
Std.
Antenna
@82’
Std. Antenna
w/Reflector
@6’
Std. Antenna
w/Reflector
@18’
30mph 100% 100% 90% 87%
45mph 95% 100% 62% 62%
60mph 88%* 100% 43% 48%
N = 60 / Test
* All phones missed were in the center console
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+3’ Elevation +9’ Elevation +16’ Elevation
Std.
Antenna
@6’
Std.
Antenna
@18’
Std.
Antenna
@6’
Std.
Antenna
@18’
Std.
Antenna
@6’
Std.
Antenna
@18’
30mph 100% 100% 100% 100% 100% 100%
45mph 100% 100% 100% 100% 100% 100%
60mph 100% 100% 100% 100% 100% 100%
N = 60 / Test
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Ten sites selected
Three focused corridors
Focus on travel to/from
Mizzou Arena & not
around outside of city
Not all pairs logical or
possible due to sensor
placement location
All results are
preliminary
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One source per vehicle
Distribution of sources is random and not biased by
direction, speed or otherwise
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Origin
Ho
ur
of
Da
y
4:0
0 p
.m.
Origin
I-7
0 a
t
Sta
diu
m
Pro
vid
en
ce
at
Sta
diu
m
I-7
0 a
t
Pro
vid
en
ce I-7
0 a
t
Pro
vid
en
ce
Pro
vid
en
ce
at S
tad
ium
I-70
at
Sta
diu
m
X
XX-
-
N= 17
Avg. = 17.8
N= 9
Avg. =22.8
N= 6
Avg. = 13.1
N= 6
Avg. = 16.5
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Average Annual Daily Traffic ~60,000
Bluetooth detections
Thursday
March 3
Friday
March 4
Saturday
March 5
Sunday
March 6
Monday
March 7
Tuesday
March 8
4,849 4,762 3,867 3,411 4,425 4,295
8% 8% 6% 6% 7% 7%
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I-70 at
Stadium
I-70 at
Providence
US63 at
Stadium
Providence at
NifongTotal
Thursday
March 3103 243 335 795 1,476
Friday
March 4145 288 379 901 1,713
Saturday
March 5127 222 349 652 1,350
Sunday
March 686 151 206 508 951
Monday
March 7114 229 322 795 1,460
Tuesday
March 8114 185 277 749 1,325
Total 689 (8%) 1,318 (16%) 1,868 (23%) 4,400 (53%) 8,275
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8% 16%
53%
23%
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Distance 2.16 Miles
Speed limit: 45MPH
Theoretical minimum travel time: 2.88 minutes
Average travel time: 9.64 minutes
Median travel time: 7.03 minutes
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0
5
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March 2 March 3 March 4 March 5 March 6 March 7 March 8 March 9 March 10
Tra
ve
l Tim
e (
Min
ute
s)
I-70 at Providence to Stadium at Providence (SB) n=798
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12:00 AM 3:00 AM 6:00 AM 9:00 AM 12:00 PM 3:00 PM 6:00 PM 9:00 PM 12:00 AM
Tra
ve
l Tim
e (
Min
ute
s)
Game Day I-70 at Providence to Stadium at Providence (SB)
0
5
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20
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12:00 AM 3:00 AM 6:00 AM 9:00 AM 12:00 PM 3:00 PM 6:00 PM 9:00 PM 12:00 AM
Tra
ve
l Tim
e (
Min
ute
s)
Tuesday I-70 at Providence to Stadium at Providence (SB)
N=139
N=125
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Data is not statistically different from other methods
Requires patience to acquire sufficient sample size
Can result in extra data that otherwise would not have been
collected
Safer to deploy than other technologies
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Multiple Bluetooth sources per vehicle
Data screening techniques
(outlier identification)
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