The Tonga Climate Change Policy sets the targets of âa transport system that is not reliant on fossil fuelsâ and â100 per cent renewable energyâ. This LT-LEDS aligns with this aim as well as with the aims of Tongaâs Second NDC which states a target of reducing GHG emissions from the combustion of fossil fuels by 13 percent (16 Gg) by 2030, compared to 2006. The NDC specifies a Transport sector measure of 2 percent efficiency gain per year for newly purchased light duty vehicles to contribute to the NDC emission reduction target. The LT-LEDS pathway for transport supports this NDC aim through either establishing mandatory vehicle standards and/or incentives for purchasing more efficient vehicles through taxes, fees, or import tariffs.