Anonymous Bluetooth Probes for Special Event Traffic Management
and Evaluation Airport Security Line Service Time Measurement Darcy
Bullock, P.E. Professor School of Civil Engineering Purdue
University
Slide 2
Agenda Introductions Darcy Bullock, Purdue University Jay
Wasson, Indiana Department of Transportation Jim Sturdevant,
Indiana Department of Transportation Arthur Drenth, DHS Scot
Thaxton,DHS Domenic Bianchini, DHS Bullock Perception of
Context/Problem Statement Example Data from Brickyard 400 Examine
floor plan of IND (or DCA) to discuss application Identification of
potential social and technical issues Next Step
Slide 3
History Based upon INDOT initiative to measure travel time
along freeways and arterials. Wasson, J.S., J.R. Sturdevant, D.M.
Bullock, Real-Time Travel Time Estimates Using MAC Address
Matching, Institute of Transportation Engineers Journal, ITE, Vol.
78, No. 6, pp. 20- 23, June 2008.
Slide 4
Context of Talk We dont build the fishing poles (private sector
is better at that) We teach people to build them We are very nimble
at proof of concept research to refine design
Slide 5
Problem Statement How we can leverage pervasive consumer
electronics to provide accurate real-time estimates of passengers
travelling through a security line.
http://www.flyawaycafe.com/wp-content/uploads/2007/08/getting-through-airport-security.jpg
Slide 6
Concepts This is generally a plug flow system. We only need to
measure a modest sample to get accurate estimates Continuous system
measurement allow pro- active allocation of resources and
establishment of quantitative history. Provides fact based
information Analogy to motorists reports vs. reality on delay.
Slide 7
Indianapolis Motor Speedway (IMS) Attendance ~400,000 Seats
257,000 Indianapolis 500 and Brickyard 400 are two largest single
day sporting events in world. 1 billion $ economic impact on region
IMS
Slide 8
2008 Challenge: Extensive I-465 Construction IMS
Slide 9
Bluetooth Probe Checkpoints
Slide 10
Glossary MAC Address: a 48 bit (>28 trillion) unique address
assigned to a device by its manufacturer. Bluetooth: a wireless
protocol utilizing short- range communications technology
facilitating data transmission over short distances from fixed
and/or mobile devices Class Maximum Power Operating Range Class 1
100mW (20dBm) 100 meters Class 2 2.5mW (4dBm) 10 meters Class 3 1mW
(0dBm) 1 meter
Slide 11
Sample from Workshop on 11/21/08
Slide 12
Useful Data Station 1 Address First Detected On Last Detected
On Detection Counter 00:17:4b:de:12:569:00:25 PM9:10:02 PM7
00:10:86:e8:56:149:00:44 PM 1 00:1a:dc:b9:78:539:00:44 PM9:01:23
PM3 00:1a:dc:b7:0c:b79:04:18 PM9:04:52 PM3 00:17:e3:3a:b7:8a9:04:52
PM 1 00:1a:dc:b3:d2:ca9:05:14 PM9:06:31 PM5
00:18:af:e1:84:509:05:48 PM 1 00:1c:c1:7b:b7:069:06:09 PM 1
00:c0:1b:04:d6:9d9:06:09 PM9:07:10 PM4 00:1e:45:69:4d:1f9:06:48 PM
1 00:1c:cc:90:12:d79:10:24 PM 1 00:15:b9:d2:82:e29:12:45 PM 1
00:18:c5:ac:50:c39:14:09 PM9:14:29 PM2 00:1c:d4:8f:e5:7a9:14:29 PM
1 Station 2 Address First Detected On Last Detected On Detection
Counter 00:10:86:e8:56:149:05:44 PM 1 00:1e:45:69:4d:1f9:12:00 PM 1
00:c0:1b:04:d6:9d9:12:15 PM9:12:35 PM4 00:15:b9:d2:82:e29:18:40 PM
1
Slide 13
First-First Last-Last LAST- LAST First- First
Slide 14
Estimated Travel Time Example Not always a trivial
distinctionsome thought needs to be given to
geometrics/physics
Slide 15
Bluetooth MAC Address Concept
Slide 16
Typical Data Collection Sites 5 INDOT Stations3 Portable UMD
Stations Bluetooth Antenna at Site I-2 Battery powered unit at Site
I-1 Blimp
Slide 17
Bluetooth MAC Address Data (654,876 Records)
Slide 18
Theory Practice
Slide 19
I-465 Corridor to North Arterial I1,I2,A1
Slide 20
SB I2-I1 Segment (~2 miles) Travel Time (S) 578 unique probe
samples 1500-1800
Slide 21
Northbound Travel Time (S) Southbound Travel Time (S) Friday
evening incident IMS Traffic arriving at A1 from I1 IMS Traffic
departing from A1 to I1 I-465 Corridor to North Arterial I1I2A1
after Details Next Slide
Slide 22
A closer look at I1-I2 between 1830 and 1853 on race day
Transient spike in NB travel Time observed over ~23 minutes with ~
70 probes Northbound Travel Time (S) Southbound Travel Time
(S)
Slide 23
I-465 Corridor to South Arterial I1,I2, I3,A2
Slide 24
I-465 Corridor to South Arterial I1,I2,I3,A2 before Northbound
Travel Time (S) Southbound Travel Time (S) Northbound Travel time
from A2 to I1 Northbound Travel time from I3 to I1 Southbound
Travel time from I1 to I3 Southbound Travel time from I1 to A2
Slide 25
Northbound Travel Time (S) Southbound Travel Time (S) Friday
evening incident, Southbound Travel time from I1 to I3 triples IMS
Traffic arriving from I1 to A2 IMS Traffic departing from A2 to I1
Northbound Travel time from I3 to I1 I-465 Corridor to South
Arterial I1,I2,I3,A2 after
Slide 26
Agenda Introductions Bullock Perception of Context/Problem
Statement Example Data from Brickyard 400 Examine floor plan of IND
(or DCA) to discuss application Identification of potential social
and technical issues Next Step
Slide 27
Slide 28
Pre Security, Option 1: Antenna in Window or Walkway
Slide 29
Pre Security, Option 2: Entry to Each Security Check bs_B
bs_A
Slide 30
After security, Candidate Locations as_B as_A
Slide 31
Photos of After security Candidate Locations
Slide 32
DCA would likely require 4 before and 4 after locations
Slide 33
Agenda Introductions Bullock Perception of Context/Problem
Statement Example Data from Brickyard 400 Examine floor plan of IND
(or DCA) to discuss application Identification of potential social
and technical issues Next Step
Slide 34
Potential Technical Issues and Social/Political Technical 110
VAC Power IP Communication (desirable, not essential) Antenna
placement (some experimentation) Social/Privacy Data destruction
policy Perhaps disclose, tell people how to opt in/opt out
(University Research is a great vehicle to provide arms length
experimentation) Perhaps provide opportunity to opt in and track
historical times
Slide 35
Agenda Introductions Bullock Perception of Context/Problem
Statement Example Data from Brickyard 400 Examine floor plan of IND
(or DCA) to discuss application Identification of potential social
and technical issues Next Step
Slide 36
Study at IND Meet at IND Study at DCA Meet at DCA (perhaps Jan
10 or Jan 14) Are there opportunities for Purdue to submit a
proposal