The following pie chart illustrates the percentage of nitrogen oxide produced by different types of vehicles in London in 2020 which were gonna be going threw in the following body paragraphs.
Overall, in the following data the vehicle which has the highest percentage of nitrogen oxide is the bus which shows that using transport by bus prodcues the most nitrogen oxide emission comapared to other vehicles in the year 2020 in London whereas, the other vehicles still produced a significant amount of nitrogen oxide but not as much as the bus did.
Similarly, the car comes in second place where it produces a significant amout of nitrogen oxide in the year of 2020 which also shows not a big of a difference with the two vehicles. And to also add with the least percent of nitrogen oxide produced would be the van showing its only 14% of nitrogen oxide produced.
In conclusion, the following piechart illustrates the different percentages of nitrogen oxide emissions by different vehicles types in central London in 2020 with the bus being the highest and the van being the lowest.