The line chart illustrates the nitrogen oxide emissions of four other vehicles emitted.
From an overall perspective, it is evident that trucks and buses release a similar pattern by the end whereas the oxides of nitrogen emission remain unchanged throughout the period.
Regarding the significant categories, the trend for diesel cars remains stable throughout the period at 5 g/km. The buses witnessed a highest in the beginning of the period, 40g/km at 10 kph, before declined to near 24 g/km at 60 kph and the amount of emission started a dramatic growth to over 40 g/km at the final speed.
Concerning other information, the gasoline car emitted 10 g/km at the first 10 speed and slightly about that level. There is a sudden drop of the nitrogen oxide output of the lorries vehicle from nearly 35 g/km at 10 kph to lowest peak of this category 19 g/km at 90 phd and decrease again exactly 25 g/km at 130 speed. The trend for diesel car remain stable throughout the period at 5 g/km