The graph shows the nitrgoen oxide emissions produced by four vehicles. Summarize the information by selecting and reporting the main features and make comparisons where relevant.

The presented graph illustrates the level of nitrogen oxide emissions’ production by 4 vehicles. Diesel and Petrol cars had minor flactuations compared to Larries and Buses with noticeable changes. It is clear that Larries and Buses both experience a relatively similar pattern of initially decreasing the nitrogen oxide emissions’ level as the speed had went […]