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The image displays nitrogen oxide emissions (g/km) data by speed (kph) for four vehicles: Buses, Lorries, Petrol cars, Diesel cars. Buses: 10kph: 40g/km, 20kph: 36g/km, 30kph: 33g/km, 40kph: 30g/km, 50kph: 28g/km, 60kph: 27g/km, 70kph: 27g/km, 80kph: 29g/km, 90kph: 31g/km, 100kph: 34g/km, 110kph: 37g/km, 120kph: 40g/km, 130kph: 43g/km. Lorries: 10kph: 33g/km, 20kph: 30g/km, 30kph: 27g/km, 40kph: 25g/km, 50kph: 22g/km, 60kph: 18g/km, 70kph: 16g/km, 80kph: 18g/km, 90kph: 20g/km, 100kph: 22g/km, 110kph: 24g/km, 120kph: 26g/km, 130kph: 28g/km. Petrol cars: Between 10-130kph: consistently 10g/km. Diesel cars: 10kph: 7g/km, 20kph: 6g/km, 30kph: 5g/km, 40kph: 5g/km, 50kph: 5g/km, 60kph: 5g/km, 70kph: 5g/km, 80kph: 5g/km, 90kph: 6g/km, 100kph: 6g/km, 110kph: 7g/km, 120kph: 7g/km, 130kph: 8g/km.
Given the complexity of the image, the above description may not be entirely accurate.
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The line graph illustrates the N02 gas released by four means of transports. From a quick glance, it is clear that the N02 emissions of buses were the highest from the others, conversely, the amount of diesel car were the lowest. In addition, the figure of buses and lorries were up and down, consequently, those were speed up over the period. On the contrary, the N02 gas produced by petrol and diesel car remain stable so those speed were not rise.
The nitrogen oxide emissions released by diesel car were at the lowest point just merely at 6g/km. Followed closely by petrol car, the figure of it were at 10g/km. In particular, the N02 gas of both vehicles remain the same level so there were not accelerate over the time.
The N02 gas produced by buses began at 40g/km and then decreased at 26g/km in 60kph. After 60kph, the figure of it went up dramatically exceed the initial level. Likewise, the amount of lorries started at 33g/km, afterward, it decreased sharply at 18g/km. After that, the figure of it rose rapidly at 25g/km. Obviously, the more nitrogen oxide gas reduced, the more speed of buses and lorries can reach.
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