big data: 800 cyclists in gothenburg help...
TRANSCRIPT
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BIG DATA: 800 CYCLISTS IN
GOTHENBURG HELP COLLECTING
GPS DATA
A research project financed by The Swedish Transport Administration
Anna-Klara Ahlmer, Trivector Traffic AB Sweden
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CYCLING IN SWEDEN IS POPULAR
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There is a new national strategy for more and safer cycling (2017) ‒ Goals on regional and municipality level
On safe cycling
On healthy cycling
On climate friendly cycling
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BUT GOALS REQUIRE FOLLOW-UP
Today travel surveys are being
used
…Or bike-counters, but they are
quite limited
In addition, there is no reliable
data on where and when
people cycle, and also who is
cycling and how fast
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TECHNOLOGY CAN GIVE US BETTER CYCLE DATA
From GPS and accelerometers Big Data can be obtained
And with new ways of recruiting cyclists, using crowdsourcing
However, this approach need to be evaluated ‒ What recruitment methods work ‒ Are data representative?
The purpose of the study was to evaluate a large-scale voluntary collection of bicycle transport data
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Romanillos et al (2016) Big Data and Cycling, Transport Reviews, 36:1
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RECRUITMENT OF CYCLISTS IN GOTHENBURG
SEPT-OCT 2017 Several different methods were used:
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www.goteborg.se/
University + student union
Newspaper interviews
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HOW COULD PEOPLE PARTICIPATE?
Option 1: Connect Strava/Moves account to the project
Option 2: Use the app TravelVu
Questionaire with 4 questions in both options: ‒ Age
‒ Gender
‒ Postal code
‒ Recruitment
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Background data
from respondents
Low response burden
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OPTION 1 DONATE STRAVA/MOVES DATA AT A WEBPAGE
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TRAVEL SURVEYS
BY SMARTPHONES
- A NEW WAY TO MEASURE
AND UNDERSTAND TRAVEL
OPTION 2: DOWNLOAD THE APP TRAVELVU
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HOW IS TRAVELVU WORKING? It’s a travel survey app
Suggests how
you’ve travelled
User verifies /
changes the data
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Overview trips by day The user can adapt mode,
time, speed, distance, activity by tapping on the
element.
Summary of trips. In time and distance.
By day, week and month
Route where the trip took place Location for an activity
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RESULTS
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MORE THAN 800 PARTICIPANTS
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MOST PARTICIPANTS
RECRUITED VIA FACEBOOK AND NEWSPAPER ARTICLES
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21 OOO TRIPS
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More than 21 000 collected trips
Cleaning of data: ‒ More than 19 000 trips
left
Heatmap shows which routes most people take
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RESULT: GENDER AND AGE OF PARTICIPANTS
TravelVu 52 % men
Strava app 89% men
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RESULT COMPARED TO TRAVEL SURVEY 2017
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SHORT TRIPS DOMINATE
Around 50 % of all trips are shorter than 2 km
Around 70 % of all trips are shorter than 5 km
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WHERE DO PEOPLE CYCLE TO?
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CYCLING SPEEDS DIFFER PER APP
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BIKE VS ELECTRIC BIKE
Longer average distance:
we bike further on electric bikes
than on traditional bikes
Similar average duration:
the time we spend cycling with
an electric bike is the same as
with a traditional bike
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Source: sierraclub.org Illustration by Little friends of printmaking.
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CONCLUSION
Recruitment successful
Important to chose the right app(s) ‒ Has an impact on gender-balance and on representativity
The age balance gave few really young and few over 65 years
Trip duration and trip distance for the TravelVu app corresponded to Gothenburgs travel survey from 2017 => Crowdsourcing recruitment method and result is promising
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THANK YOU FOR LISTENING!