Air Pollution
- Vehicle emissions
- Vehicle flow and speed
- Vehicle size
- Filtration systems
- Fuel quality
- Combustion process
- Catalytic converter
- Exposure of population
- Population density
- Centres in proximity of road network
- Damage to infrastructure, structures and the natural environment
- Barriers used
- Building materials used
- Building fragility
- Building density
- Ecological/biological sensitivity of areas