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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 figure for nitrogen oxide, which was emitted by four different vehicles.
Overall, the amount of nitrogen oxide that was released by Buses and Lorries both changed in each vehicle speed, the opposite was true for Petrol and Diesel cars.
First of all, it can be seen that Buses were vehicles that emit the most significant amount of nitrogen oxide with 40g/km at a speed of 10km per hour, which were followed by Lorries with about 33g/km. Besides, also at this speed, Petrol car released a slighter figure for N2O with only 10 grams, which was double that of Diesel car. In addition, after increasing speed by 6 times, it witnessed a vital downward trend in the amount of nitrogen oxide exhausted by Buses and Lorries with approximately 25g/km. Meanwhile, the N2O in Petrol cars and Diesel cars still remained the same.
Finally, when reaching 130kph, the figure for nitrogen oxide by Buses rocket to more than 40g/km, which was 1,6 times with Lorries. While the amount of N2O emitted by Petrol cars and Diesel cars was back to the way it was before with 10g/km and 5g/km respectively.
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