The transport sector plan released on Thursday doesn’t have a target for emissions reduction for the sector. That’s a shame – it’s difficult to design policy well without understanding what we’re aiming at.

Transport emissions have grown by 14m tonnes or 18% since 2005. The biggest increases have been in aviation (up 68% since 2005) and light commercial vehicles (up 62% since 2005).

This happened because we are flying more often, and increasingly buying personal cars that count as “light commercial” – think big 4WD utes.

The CSIRO’s work for the Climate Change Authority estimates that transport emissions could be reduced by 20% by 2035, with most of this coming from road transport.

Three policies act on transport emissions at the moment: the fringe benefits tax exemption for electric cars, the safeguard mechanism, and the new vehicle efficiency standard.

But between these three policies, only 11% of transport emissions are subject to a constraint.

The holes in policy are for heavy vehicles – we need incentives for truck owners to switch to cleaner sources, but also more attention on the logistics of providing them with alternative fuel sources. We need charging infrastructure for electric trucks, both at depots and along highways; and we need upgrades to electricity infrastructure to support that. There’s almost no supply chain at the moment for alternative fuels such as biodiesel, and there is no incentive to use alternative fuels. Meanwhile, fuel tax credits provide a disincentive to switch and there’s uncertainty over road user charging. The government announced a $1bn package for low-emissions fuels on Wednesday but we’re yet to see the detailed policy design.

Bottom line: the destination is clear, the technological solutions are clear, but it’s a long journey, and we don’t have the right policies yet to get us there.

Alison Reeve

Energy and Climate Change Program Director
Alison Reeve is the Energy and Climate Change Program Director at Grattan Institute. She has two decades of experience in climate change, clean energy policy, and technology, in theprivate, public, academic, and not-for-profit sectors.