The chart below shows the nitrogen oxide emissions of four different vehicles at different speed. Summarize the information by selecting and reporting the main features, and make some comparisons where relevant.

The graph illustrates the nitrogen oxide emissions from four vehicle types—diesel cars, gasoline cars, trucks, and buses—across varying speeds ranging from 0 to 130 km/h. Overall, it is evident that each vehicle type exhibits distinct patterns of nitrogen oxide emissions, with gasoline cars consistently emitting the least, while buses show notable fluctuations. In detail, diesel […]