The graph illustrates the amount of nitrogen oxide which was emitted by four vehicles, namely, Diesel cars, Petrol cars, lorries, and buses.
Overall, a significantly downward trend applied to the amount of nitrogen oxide produced by lorries, while the amount of nitrogen oxide which was emitted by buses witnessed a slight increase. Additionally, the amount of nitrogen oxide produced by Petrol cars was subject to a marginal fluctuation, whereas the nitrogen oxide emitted by Diesel cars saw a slight decrease in this period.
As can be seen from the graph, at the speed of 10 kph, buses emitted the highest amount of nitrogen oxide, at 40 g/km, which was nearly fourfold the nitrogen oxide emitted by Petrol cars, at 11 g/km. Meanwhile, the amount of nitrogen oxide which was emitted by lorries was the second highest, at 33 g/km. In addition, the amount of nitrogen oxide which was emitted by Diesel cars was the lowest, at 7 g/km.
From 10 kph to 90 kph, the amount of nitrogen oxide which was emitted by buses suddenly dropped before rising again to nearly 35 g/km at the speed of 90 kph. Besides, the nitrogen oxide emitted by lorries dramatically decreased to about 16 g/km. In addition, the amount of nitrogen oxide which was emitted by Petrol cars and Diesel cars saw a fluctuation but slightly decreased to about 10 g/km and 5 g/km, respectively.
Between 90 kph and 130 kph, the nitrogen oxide emitted by buses and lorries continued to rocketed and reached a peak of 42 g/km and 24 g/km. Similarly, the amount of nitrogen oxide which was emitted by Petrol cars saw a marginal rise to about 11 g/km. Meanwhile, the amount of nitrogen oxide produced by Diesel cars remained stable at 5 g/km from 90 kph to 130 kph.
The graph illustrates the
amount
of nitrogen oxide which was
emitted
by four vehicles,
namely
,
Diesel
cars
,
Petrol
cars
,
lorries
, and buses.
Overall
, a
significantly
downward trend applied to the
amount
of nitrogen oxide produced by
lorries
, while the
amount
of nitrogen oxide which was
emitted
by buses witnessed a slight increase.
Additionally
, the
amount
of nitrogen oxide produced by
Petrol
cars
was subject to a marginal fluctuation, whereas the nitrogen oxide
emitted
by
Diesel
cars
saw
a slight decrease in this period.
As can be
seen
from the graph, at the speed of 10 kph, buses
emitted
the highest
amount
of nitrogen oxide, at 40 g/km, which was
nearly
fourfold the nitrogen oxide
emitted
by
Petrol
cars
, at 11 g/km. Meanwhile, the
amount
of nitrogen oxide which was
emitted
by
lorries
was the second highest, at 33 g/km.
In addition
, the
amount
of nitrogen oxide which was
emitted
by
Diesel
cars
was the lowest, at 7 g/km.
From 10 kph to 90 kph, the
amount
of nitrogen oxide which was
emitted
by buses
suddenly
dropped
before
rising again to
nearly
35 g/km at the speed of 90 kph.
Besides
, the nitrogen oxide
emitted
by
lorries
dramatically
decreased to about 16 g/km.
In addition
, the
amount
of nitrogen oxide which was
emitted
by
Petrol
cars
and
Diesel
cars
saw
a fluctuation
but
slightly
decreased to about 10 g/km and 5 g/km,
respectively
.
Between 90 kph and 130 kph, the nitrogen oxide
emitted
by buses and
lorries
continued to rocketed and reached a peak of 42 g/km and 24 g/km.
Similarly
, the
amount
of nitrogen oxide which was
emitted
by
Petrol
cars
saw
a marginal rise to about 11 g/km. Meanwhile, the
amount
of nitrogen oxide produced by
Diesel
cars
remained stable at 5 g/km from 90 kph to 130 kph.