Land transport currently contributes nearly 20% of greenhouse gas emissions in New Zealand. The government’s priority is to reduce emissions from the transport system.
The primary greenhouse gas is carbon dioxide (CO2), and other direct and indirect climate pollutants include black carbon (BC), methane (CH4) and sulphur dioxide (SO2). Other air pollutants are included in 3.2 Impact of air emissions on health.
This benefit might be identified in transport investments or programmes that impact the number of greenhouse-gas emitting vehicles or the emissions generated through mode shift or other means.
Two quantitative measures are available for this benefit cluster; one a direct measure of greenhouse gas emissions from transport, and the other about the number of single occupancy vehicles. Greenhouse gas emissions are measured in the Monetised benefits and costs manual by CO2 equivalent emissions, which are determined through the Vehicle Emission Prediction Model (VEPM). The monetised value is the whole-of-government agreed shadow price of carbon.
This benefit can be monetised.
For information about how to monetise this benefit see the Monetised benefits and costs manual.
8.1.1 CO2 emissions#
8.1.2 Mode shift from single occupancy private vehicle*
Measures marked # are quantitative and those marked * are qualitative.
For more information about these measures see Non-monetised benefits manual: qualitative and quantitative measures.