The given graph shows the nitrogen oxide emissions produced by four vehicles. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The line graph compares how much nitrogen emissions

produced

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are produced

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by four vehicles namely:

diesel

cars

, petrol

cars

,

lorries

and

buses

.

Overall

,

it is clear that

the number of

buses

produced the highest amount of nitrogen oxide over the period shown

while

diesel

cars

were the most environmentally-friendly type of vehicles.

In addition

,

lorries

and

diesel

cars

witnessed a slight decrease in the period. As can be seen from the chart, the amount of NO released by

buses

was 40g/

km

at 10

kph

. It decreased to 25g/

km

when the

buses

got faster at 60

kph

, before rising and reaching a peak at over 40g/

km

at 120 speed.

In addition

,

lorries

created 32g/

km

at the lowest speed. The figure for that kept dropping to nearly 20g/

km

as the

lorries

drove at 90

kph

and increased again

25

Change preposition

to 25

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g/

km

at 120

kph

. Looking at the chart in more detail, petrol and

diesel

cars

produced less emissions. The sum of nitrogen emissions emitted by

diesel

cars

remained stable at 5g/

km

at any speed.

Similarly

,

car

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cars

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run on gasoline

also

manufactured a steady total, which stood at 10g/

km

.