An additional advantage is the operation cost savings that would give a LNG conversion payback between 1 and 3 years. LNG in heavy-duty trucks reduces greenhouse gas (GHG) emissions per kilometre up to 20% and almost 100% SOx and particulate matter, as well the noise in inner cities, compared to diesel trucks. For this problem, a LNG vehicle with the same fuel tank size could travel up to 2.4 times the distance compared with CNG. However, CNG has not been attractive for extra-urban use mainly by the limited energy storage volume and difficulties for NG stations installation.

Natural gas (NG) technology for transportation is mature and extended through the compressed use (CNG) in urban light vehicles. This paper reviews the liquefied natural gas (LNG) use advantages over other fuels and analyses its introduction prospects in the transport sector in Europe, specifically in road freight transport. Furthermore, this alternative fuel must have autonomy, security and as optimal storage volume as the natural gas use in liquid state.

This dependency, among other problems, produces high levels of harmful emissions, which makes it necessary to increase the use of less polluting and more cost-effective alternative sources as natural gas. Finally, some projections for the LNG implementation in the Spanish road freight transport are introduced, concluding that the fuel switch in long-haul trucks could reduce GHG emissions by 12% and diesel fuel consumption by 42% in the long term.Ĭurrently, energy consumption in the worldwide transport sector depends on 92.8% oil fuels. In addition, the installation of new LNG terminals would significantly contribute to the security of supply and meeting diversification targets. Steps taken to date for developing an open and transparent international NG market are paving the way. Ensuring price stability and reducing uncertainty for investments are keys. From this market perspective, the prospects for LNG introduction in the European scenario have also been analyzed. Although it is necessary to continue research to develop a reliable database to estimate the actual environmental impact of LNG, the main difficulties for its deployment are market-related. This paper reviews the key environmental, technical and socioeconomic aspects of LNG deployment as alternative fuel for road freight transport. In addition, the use of LNG in heavy-duty vehicles reduces the GHG emissions per kilometer by up to 20% and eliminates almost 100% of the sulfur oxides and particulate matter while also reducing the noise in inner cities compared with the use of diesel trucks. The introduction of liquefied natural gas (LNG) could broaden the use of natural gas for longer distances due to its higher energy density. Natural gas (NG) technology for transportation is mature and extended through the use of the compressed form in urban and light vehicles.

In the current environmental and economic context, the use of less polluting alternative fuels simultaneously providing security of supply and optimal energy storage is encouraged. Approximately one-quarter of the total greenhouse gases (GHG) emissions in Europe can be attributed to the transport sector, with petroleum-derived fuels dominating road transport.

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