How does diesel truck exhaust affect the environment?

Diesel truck exhaust contributes to air pollution primarily due to the emissions of harmful substances such as nitrogen oxides (NOx), particulate matter, carbon monoxide, and unburned hydrocarbons. These pollutants can lead to a variety of environmental issues, including smog formation, acid rain, and respiratory problems in humans and animals. The nitrogen oxides can react with other airborne substances to form ground-level ozone, which is a key component of smog and can adversely affect ecosystems as well as human health.

The presence of particulate matter in diesel exhaust is particularly concerning, as it can penetrate deep into the lungs and even enter the bloodstream, leading to cardiovascular and respiratory ailments. Overall, the impact of diesel truck emissions underscores the importance of regulations and technologies aimed at reducing exhaust emissions to mitigate their harmful effects on both the environment and public health.