Innovative changes are required to transport goods competitively and in an eco-friendly way by rail. 8.4 Aviation sector For the 2050 time horizon, Switzerland is pursuing the following objective in international aviation to achieve the overarching net-zero target on greenhouse gas emissions: 2050 target: International aviation from Switzerland should no longer generate climate-impacting emis- sions in net terms by 2050 as far as possible. This means: â¢ Fossil CO2 emissions amount to net zero. â¢ The other climate impacts decline or are offset with other measures. Greenhouse gas emissions from international aviation from Switzerland are currently excluded from the reduction target in exactly the same way as those from international shipping traffic.