Aalborg Universitet Bike Infrastructures Report Silva, Victor ... - VBN

THE WEB SURVEY
The web survey analysis is divided in four sections. Firstly,
main findings are presented. The second section describes
the spatial distribution of the residential location
of the respondents. Thirdly, a descriptive statistic to analyze
all the answers. In search of finding relationships between
socio-demographic variables and the web survey
answers, the last section presents a statistical analysis
using the Chi2 test.
A total of 290 individuals that were riding a bike at Bryggebro
on the 1st of September answered the questionnaire
in the period between September 1st and October 31st.
Based on the count done in Copenhagen municipality in
September 2009, there are an average of 7352 bicycle
trips at Bryggebro from 7am until 7pm from both directions
on weekdays. Estimating that 35% of these cyclists
ride their bikes at least once per day in the infrastructure,
it was stipulated that a total of 4778 individuals ride a bike
at Bryggebro per day.
A total of 3020 flyers were distributed to individuals riding
their bikes in the infrastructure from 7am until 7pm and
from these a total of 290 answered the questionnaire.
Based on these figures, the respondents represents
6,06% of the total of individuals riding a bike per day in
the infrastructure and 9,60% of individuals that collected
the flyer on September 1st whilst riding a bike in the infrastructure.
MAIN FINDINGS
In conclusion the data from the survey reveals a picture of
Bryggebro as a piece of infrastructure used by the majority
of the cyclists for commuting to work (69%) and to study
(8%). However, the main purpose of the trips from the left
23% is very diverse (19% shopping, 3% recreational, 6%
visiting family and friends and 4% others). The figures are
directly connected to the built environment were the infrastructure
is located – a main streets in a residential based
neighborhood next to the city core.
After the Chi2 test was applied, the results highlight that
most of the answers do not have a relation with socio-demographic
conditions. However, some representative relations
between the independent variables – gender, age
and educational level – and the questionnaire answers
were identified.
There is a relation between the main trip purpose when
riding a bike at Bryggebro and age and educational level.
The impact of the opening of Bryggebro in the individuals
decision to ride a bike more often has also a relation
educational level. Finally, educational level also seems to
have a relation with the individuals` answers on regards
their opinion about conflicts between the different transportation
modes in the infrastructure.
Finally, there is a relation between gender and individuals`s
opinion about the lack of awareness of pedestrians for cyclists
in the infrastructure.
The following section provides the actual data for each of
the questions asked.
RESIDENTIAL LOCATION OF
RESPONDENTS
The residential addresses of the respondents – individuals
riding a bike at Bryggebro on September 1 – were
registered and geo-referenced in order to produce a map
(see Figures 3.3.60 and 3.3.61). According to the Table
3.3.1, the majority of the respondents (59,7%) live within
a radius of 2 kilometres and 90% of them living within 5
kilometres distance from the infrastructure.
Respondents living more than 5 kilometers from the infrastructure
correspond to 10% of the total and from this
amount 30% are living more than 10 kilometres away of
the infrastructure.
0-1 KM 1-2 KM 2-3 KM 3-4 KM 4-5 KM 5-10 KM 10-15 15-20 20 KM<
KM KM
NO. DWELLINGS 95 78 43 29 16 19 5 4 1
% DWELLINGS 32,8% 26,9% 14,8% 10,0% 5,5% 6,6% 1,7% 1,4% 0,3%
Table 3.3.1: Absolute and percentage distribution of respondents according to the distance of their residential location from Bryggebro.
142 143