Using Bluetooth to Determine Using Bluetooth to Determine Travel - - PowerPoint PPT Presentation

▶
using bluetooth to determine using bluetooth to determine
SMART_READER_LITE
LIVE PREVIEW

Using Bluetooth to Determine Using Bluetooth to Determine Travel - - PowerPoint PPT Presentation

Sep 24, 2023 50 likes •271 views

ITE Mid-Colonial District Annual Meeting April 29, 2010 Using Bluetooth to Determine Using Bluetooth to Determine Travel Times www.kmjinc.com 1 Agenda Bluetooth and How It Works The BlueTOAD TM Device Evaluation Project

slide-1
SLIDE 1

ITE Mid-Colonial District Annual Meeting April 29, 2010

Using Bluetooth to Determine Using Bluetooth to Determine Travel Times

www.kmjinc.com

1

slide-2
SLIDE 2

Agenda

  • Bluetooth and How It Works
  • The BlueTOADTM Device
  • Evaluation Project

Evaluation Project

  • Overview
  • Analysis
  • Results

www.kmjinc.com

2

slide-3
SLIDE 3

What is Bluetooth?

An open wireless communication platform An open, wireless communication platform

www.kmjinc.com

3

slide-4
SLIDE 4

How does Bluetooth work?

  • Transmission and acceptance of a “MAC”

Transmission and acceptance of a MAC address.

  • A small transceiver constantly transmits its

y

  • wn unique MAC address to find other

devices with which to communicate.

www.kmjinc.com

4

slide-5
SLIDE 5

BlueTOADTM

  • BlueTOADTM Device by TrafficCast

BlueTOAD Device by TrafficCast (Travel-time Origination And Destination)

Collects MAC addresses from –Collects MAC addresses from Bluetooth devices anonymously M t d 6 t 10 f t b th –Mounted 6 to 10 feet above the travel lane R di f d t ti i b t 175 –Radius of detection is about 175 feet

www.kmjinc.com

5

slide-6
SLIDE 6

Travel Time via BlueTOADTM

  • Position two or more devices

along a roadway network along a roadway network.

– MAC addresses are time stamped and matched and matched – Space mean speed is then calculated calculated – Algorithms eliminate outliers – illogical pairs multiple simultaneous illogical pairs, multiple simultaneous addresses, etc.

www.kmjinc.com

6

slide-7
SLIDE 7

Travel Time via BlueTOADTM

  • Position two or more devices along a roadway

network network.

– Travel time can be captured “station-to-station”, or “end-to-end” in each direction end to end in each direction.

175 ft. www.kmjinc.com

7

slide-8
SLIDE 8

Bluetooth - I-76 Evaluation

  • Purpose – to evaluate a Bluetooth

Purpose to evaluate a Bluetooth detecting device to collect and report travel time time.

  • Study Roadway: I-76

– Major commuter route – EZPass detectors – EZPass detectors – Likely high prevalence of Bluetooth

www.kmjinc.com

8

slide-9
SLIDE 9

I-76 Eastbound Segment

  • 2.9 Miles

2.9 Miles M t D i t

  • Montgomery Drive to

Spring Garden Street

www.kmjinc.com

9

slide-10
SLIDE 10

I-76 Westbound Segment

  • 2.9 Miles
  • Waverly Road to I-476

www.kmjinc.com

10

slide-11
SLIDE 11

Groundtruth Data Groundtruth Data

  • RTMS traffic volume counts through

PennDOT’s Dynac system

  • EZPass travel time results reported every
  • EZPass travel time results reported every

15 minutes

  • Number of EZPass pairs found through

PennDOT’s Transmit server

www.kmjinc.com

11

slide-12
SLIDE 12

Bluetooth Data Bluetooth Data

  • TrafficCast provided 15-minute reports for:

TrafficCast provided 15 minute reports for:

– Average travel time – Average space mean speed (based on average travel time) – Total number of matched pairs

www.kmjinc.com

12

slide-13
SLIDE 13

Performance Metrics Performance Metrics

  • 1. Travel time

2 Match Rate Percent of matched pairs

  • 2. Match Rate – Percent of matched pairs

within the corresponding traffic stream

  • 3. General cost and constructability

www.kmjinc.com

13

slide-14
SLIDE 14

Travel Times - Eastbound Montgomery Drive to Spring Garden Street

www.kmjinc.com

14

slide-15
SLIDE 15

Travel Times - Westbound Waverly Road to I-476 Interchange y g

www.kmjinc.com

15

slide-16
SLIDE 16

Match Rate Comparison Match Rate Comparison

Eastbound Device Match Rate Device Match Rate Daily AM Peak Period PM Peak Period BlueTOADTM 3.5 3.5 4.6 EZPass 29.5 37.1 34.7 Westbound Device Match Rate Daily AM Peak Period PM Peak Period BlueTOADTM 4.1 4.0 4.0 EZPass 12.9 15.6 16.1 www.kmjinc.com

16

slide-17
SLIDE 17

Minimum Match Requirements Minimum Match Requirements

  • Per 15 minutes:

9 matches P h 36 t h

  • Per hour:

36 matches

  • Per day:

864 matches

  • Per day:

864 matches

Source: Stanley Young

www.kmjinc.com

17

slide-18
SLIDE 18

Match Results

Eastbound Westbound Eastbound Time Period Minimum Match BlueTOADTM AM Peak PM Peak Westbound Time Period Minimum Match BlueTOADTM AM Peak PM Peak Time Period Match Requirement AM Peak Period PM Peak Period 15 minutes 9 23 19 Time Period Match Requirement AM Peak Period PM Peak Period 15 minutes 9 16 18 1 hour 36 145 189 24 hours 864 3,288 1 hour 36 94 94 24 hours 864 2,171

www.kmjinc.com

18

slide-19
SLIDE 19

Travel Time Results - Eastbound Montgomery Drive to Spring Garden Street

EZPass: 1,559 pairs p per hour BlueTOADTM : 189 pairs per EZPass: 1,852 pairs per hour

TM

hour BlueTOADTM : 145 pairs per hour EZPass captured 27,903 pairs BlueTOADTM captured 3,288 pairs www.kmjinc.com

19

slide-20
SLIDE 20

Cost and Constructability Cost and Constructability

BlueTOADTM EZPass BlueTOADTM base unit Tag Reader lane kit BlueTOADTM base unit, solar battery, cellular modem, vertical strain pole $9,700 to $12,200 Tag Reader, lane kit and cabinet, mast arm and pole structure $34,000 to $36,000

EZPass EZPass BlueTOADTM

www.kmjinc.com

20

slide-21
SLIDE 21

Conclusions Conclusions

The Bluetooth detecting devices were found to have the following benefits:

  • Similar travel time results

Similar travel time results

  • Match rate is adequate
  • Cost less
  • Installation is uncomplicated

Installation is uncomplicated

www.kmjinc.com

21

slide-22
SLIDE 22

Thank you for your time Thank you for your time. Any Questions? Any Questions?

www.kmjinc.com