THE GEOGRAPHY OF TRANSPORT SYSTEMS
| Local Scale | Regional Scale | Global Scale |
| Noise and vibrations | Acid rain and acid depositions | Climate Change (Carbon dioxide, CFCs) |
| Carbon monoxide, Odors | Ozone layer depletion (CFCs) | |
| Smog, Nitrogen oxides, HC/VOC, Particulates, lead | Reduction of fossil fuel reserves | |
| Sulfur dioxide, Ozone | ||
| Accidental and intentional releases | ||
| Fallouts | ||
| De-icing of infrastructure, Runoffs | ||
| Marine vessels discharges and spills | ||
| Construction and maintenance of infrastructure | ||