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Collaborate with Tiramisù to provide bus riders
a real-time bus tracking systemJason Zhang
Carnegie Mellon University
Part 1What is the problem?
Gap between schedule and actual arrival time
Part1: What’s the problem?
3 arrive on time
5 arrive 6 minute later
0 arrive 8 mins earlier
number
2
4
6
8
earlier later
Sample Size = 40
0 +2 +4 +6 +8-8 -6 -4 -2
number
2
4
6
8
earlier later
Sample Size = 40
0 +2 +4 +6 +8-8 -6 -4 -2
Part1: What’s the problem?
Buses are unpredictable
Bus arrive randomly,regardless the schedule
Source: Survey conducted by Jason Zhang [Date: Oct, 2012]
Part 2Why is it important?
Part2: Why is it important?
Unpredictibility
Bus Riders
Port AuthorityCommunity
• Waste time • Raise dissatisfaction• Decrease life
quality
• Fail to fulfill vision/mission
• Hurt brand image• Lose bus riders
• Increase air pollution
• Make streets crowded
Unpredictable buses trigger negative effects
Part 3What is the solution?
Establish a real-time tracking system to reduce unpredictability
UnpredictibilityProblem
Real-time tracking systemSolution
Part3: What’s the solution?
Part3: What’s the solution?
Several other agencies have benefited from their real-time tracking systems
Source: [1]. Bentley, R. (2003). Bus company implements real-time GPRS tracking to meet passenger service targets [2]. Ferris, B., & Borning, A. (2011). OneBusAway: Behavioral and Satisfaction Changes Resulting from Providing Real-Time Arrival Information for Public Transit. Proceedings of the 2011 Transportation research[3]. Tang, L., & Thakuriah, P. (Vonu). (2012). Ridership effects of real-time bus information system: A case study in the City of Chicago. Transportation Research Part C: Emerging Technologies, 22, 146–161. doi:10.1016/j.trc.2012.01.001
Rider’s waiting timehas been reduced by 70%
respondents are more satisfied92%OneBusAway
Weekday ridership per route has increased by 126
Port Authority can’t afford to develop its own system
Aaron SteinfeldAssociate Research Professor in CMU’s Robotics InstituteProject director of Tiramisu
Source: Jon, S. (2012, March 30). New app provides real-time bus info. Pittsburgh Post-Gazette. Retrieved December 7, 2012, from www.post-gazette.com/stories/news/transportation/new-app-provides-real-time-bus-info-308018/
Part3: What’s the solution?
It would have cost tens of millions of dollars for the Port Authority to develop its own real-time tracking system, something the agency could not afford.
Forbes Ave.
Bus StopBus Stop
MacKenzie Adrianto
61C
Tiramisu provides a real-time tracking service based on crowdsourcing
Part3: What’s the solution?
Forbes Ave.
Bus StopBus Stop
MacKenzie
When bus rider get on the bus
Adrianto
Data Receiving & Process
System
Web Mobile App
Real-time Tracking SystemProcess
Part3: What’s the solution?
User Interface
GPS Tracking Server
GPS Tracking Device
Tracking SystemArchitecture
RelevantCost
GPS device
Server System developing System maintaining
Web developing App developing
Tiramisu can help Port Authority reduce the cost of providing the real-time tracking service
SAVE
SAVE
Part3: What’s the solution?
Action#1: Install GPS devices on some buses
Data Available Data Not Available
Current Users New UsersGPS Devices
Part3: What’s the solution?
Action#2: Advertise the app
Buses Bus-stop Port Authority Website
Low-cost - Take advantage of Port Authority own resourcesEfficient -Target directly at bus riders
Summary
I. What’s the problem?
Gap between estimate and actual arrival time
II. Why is it important?
Negative impacts on stakeholders: bus riders, Port Authority & community
III. What’s the solution?
Collaborating with Tiramisu by (1) installing GPS devices on some buses and (2) advertising the app
