Transcript Analysis of Naturalistic Electric Bike Rider Behavior: Energy and

Analysis of Naturalistic Electric Bike Rider
Behavior: Energy and Power Considerations
By Noelani Fishman and Breanna Piercy
Graduate Assistant: Kwaku Boakye
Professors: Shashi Nambisan, Chris Cherry
Center for Transportation Research
University of Tennessee, Knoxville
Goals
• Determine how much energy is put into pedaling
a standard e-bike
• Analyze naturalistic behavior
■ Interpret data about
◙ Power expenditure
◙ user’s energy distribution
◙ Electric bicycle’s efficiency
• Encourage use of electric bikes
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Introduction
• An e-bike is a hybrid between human and
electrical power that uses an electric motor to
assist its rider
❖ UT hosted an
on-campus ebike share
program in
2012
❖ Currently,
research
continues
centered
around e-bikes
at UT
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Bicycle/E-bike Share Programs
• are self-serving bike stations in cities
■
■
■
■
First 30 minutes free
Return to other station
Mainly in Europe and Asia
Two cities:
Denver
◙ New York City
◙
• E-bike share programs rare in US
■
Started on UT campus in TN
◙
Ended within a year
• San Francisco plans on creating a program
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Classifications and Parts of E-Bikes
•How electric bikes operate:
■ Power-assisted
■ Power-on-demand
•Electric Bike Classification:
■ Pedal Assist
■ Throttle on Demand
■ Speed Pedelic
■ Moped or Motorcycle
•Three main components of an electric bike:
■ The Battery
■ The Motor
■ The Controller
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Anatomy of an E-bike
We will add a picture of an e-bike
right here, and
then use graphics to explain its
anatomy. We haven’t done this yet
because we are going to use a
picture we take ourselves.
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Advantages of
E-bikes
● Promotes exercise
● On some e-bikes, can pedal to
power motor
● Easier to pedal
● More energy efficient for uphill and
against wind riding
● Greener form of transportation
● Requires greater use of ab muscles
because of weight
● Smaller environmental footprint than
regular bicycles
Disadvantages of
E-bikes
●
●
●
●
●
●
Heavier than normal bikes
Expensive
Increased crash rates on bike trails
Difficult to steer
Cumbersome due to weight and size
Greater speeds lead to safety
concerns
● Not as much exercise as a normal
bike
● Government regulations are vague
and restrict usage
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Country Experiences and Legislation of E-bikes
• E-bike usage in the United States is limited due to legislation
put in place by state governments
• Limits put on e-bikes include:
■ Speed limit
■ Must follow regular bicycle regulations
■ Must have pedals
■ Weight restrictions
■ Motor wattage
• E-bikes have increased in popularity globally
■ In 2012, 29.3 million e-bikes were sold globally
• E-bike popularity has boomed in China and the Netherlands
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The Process
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Data we don’t yet know
Equation we use to figure out power used by
each rider
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Data we don’t yet know
This would be a chart to explain the differences
between electricity-free riding and full
electricity riding
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Data we don’t yet know
Conclusion of data and the result we got
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Bibliography
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"What Are Electric Bike Classes and Why Do They Matter? - ElectricBikeReview.com."
Electric Bike Review. N.p., n.d. Web. 29 June
2015.
"Will Electric Bicycles Get Americans to Start Pedaling?" By Marc Gunther: Yale
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Macarthur, John, Jennifer Dill, and Mark Person. "Electric Bikes in North
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Transportation Research Record: Journal of the
Transportation Research Board 2468
(2014): 123-30. Web. 1 July 2015.
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Bibliography
Behrendt, Frauke. "Using Electrically-assisted Bikes: Lazy Cheaters or Healthy Travellers?" The Guardian. N.p.,
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Web. 07 July 2015.
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Acknowledgements
This work was supported primarily by the ERC
Program of the National Science Foundation and
DOE under NSF Award Number EEC-1041877.
Other US government and industrial sponsors of
CURENT research are also gratefully
acknowledged.
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Questions and Answers
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