Environmental impact of shipping engines can be higher on a port-specific basis. Ultra-low sulfur diesel (ULSD) is a standard for defining diesel fuel with substantially lowered sulfur contents. As of 2006, almost all of the petroleum-based diesel fuel available in Europe and North America is of a ULSD type. In 2016 the IMO has made new sulfur regulations which must be implemented by larger ships by 2020. Of total global air emissions, shipping accounts for 18 to 30 percent of the nitrogen oxide and 9 percent of the sulphur oxides. Sulfur in the air creates acid rain which damages crops and buildings. When inhaled,
Environmental issues in Georgia pollutants monitored in Georgia include particulate matter (total suspended particulates [TSP]), carbon monoxide (CO), nitrogen oxides (NO2, NO), and sulfur dioxide (SO2). In Georgia the public transport system is not sufficiently developed. A significant proportion of the population uses private vehicles as the preferred mode of transport. The number of private vehicles has grown rapidly over the past decade and has almost doubled in the last five-year period. Traffic has increased followed by industrial sources. The country has seen a sharp rise in the number of old, dirty diesel vehicles on the road over the last decade and pollution testing