Relation between traffic and air quality
Anonymous, 1234567
Introduction
Methods
In the last years, there is a growing discussion
of the emission of fossil fuel by transport,
especially diesels that emit a lot of NOx, which
is harmful to people and nature. But is that
right? Does traffic really influence the air
quality? In this research answers are provided
to the relation between NO2, an important
substance that is harmful emitted by the
transport, and the amount of vehicles passing
by at a specific point. NO2 is measured by the
closest air-quality measurement stations, and
the amount of vehicles passing by is measured
at the traffic measurement stations.
To provide answer to the relation between
NO2 and the amount of vehicles passing by,
boxplots and violin plots are used. The NO2
and nr. of vehicles in box- and violinplots are
measured at their closest stations to each
other. In the boxplots, the amount of NO2
and the number of vehicles are given per
hour of the day to look at the difference
between rush hours normal hours. In the
violinplots, the NO2 and nr. of vehicles are
given per day of the week to look at the
difference between working days and
weekends. A linear regression and a
prediction is made to look how the nr. of
vehicles and NO2 depend on each other.
Results
According to the linear regression,
the amount of NO2 becomes less if
the nr. of vehicles increases.
In the boxplots above, the nr. of
vehicles is the most at rush hour
in the morning, and least at the
night. The amount of NO2 is
about the same for in the
morning and at night.
The prediction is that NO2 will
become less if nr. of vehicles
increases.
In the violinplots above, the
nr. of vehicles is lower in the
weekend (days 5 and 6), but
the amount of NO2 does not
have a deviation for the
weekend compared with the
rest of the week.
Discussion
Conclusion
With the boxplots, the violinplots and the
linear regression with prediction the relation
between traffic and air quality can be
determined and an answer can be given. But
the measurements for traffic and air quality
are not 100% right, because other factors are
also measured such as NO2 emission from the
industry, bicycles passing by (not emitting
NO2). For next time, more researches can be
done to give much more accurate answers,
with different graphs.
From the results, it can be concluded that there
is no specific relationship between the amount
of traffic and air quality. When the number of
vehicles goes up, the NO2 goes down, and the
prediction is that it will go the same. Also during
the rush hour, the amount of NO2 is not more
than where there is less traffic. In the
weekends, the amount of NO2 is not lower than
other days.
Graded Assignment 1, 2AIB0 Data Analytics for Engineers 2019/2020