Question Without Notice No. 64 asked in the Legislative Council on 15 March 2018 by Hon Tim Clifford
Parliament: 40 Session: 1
TRANSPERTH — BUSES — CARBON DIOXIDE EMISSIONS
64. Hon TIM CLIFFORD to the minister representing the Minister for Transport:
(1) What are the average CO2 emissions, in grams, for a Transperth bus per kilometre —
(a) for gas-powered vehicles; and
(b) for diesel-powered vehicles?
(2) What is the total annual amount of CO2 emissions, in grams, emitted by public transport buses in —
(a) Western Australia; and
(b) the Perth metropolitan region?
Hon STEPHEN DAWSON replied:
I thank the honourable member for some notice of the question.
(1) The first part of the answer to (1) is in tabular form, so I seek leave to have it incorporated into Hansard.
Leave granted.
The following material was incorporated —
| Emission Standard | No. PTA Gas Buses | *CO (g/kWh) |
| Euro 2 | 17 | 4.0 |
| Euro 4 | 492 | 1.5 |
| Euro 5 | 3 | 1.5 |
| Total | 512 | � |
| Emission Standard | No. of PTA Diesel Buses | *CO (g/kWh) |
| Euro 2 | 275 | 4.0 |
| Euro 5 | 756 | 1.5 |
| Euro 6 | 107 | 1.5 |
| Total | 1138 | � |
*Note: The requested data relates to Co2 (carbon dioxide) levels. Australian heavy vehicle (any vehicle with a gross vehicle mass over 3.5 tonnes) regulations do not provide reference for greenhouse gases, such as carbon dioxide. For the purpose of providing an answer to the question, the PTA has assumed the question relates to CO (carbon monoxide) emission levels which are part of the standard vehicle tail pipe emission standards measured i.e. (g/kWh) = Grams per kilowatt hour
All Public Transport Authority buses comply with each Australian emission standard for heavy vehicles, including buses. The PTA bus fleet currently ranges in age from zero to 19 years and buses comply with relevant exhaust emission standards at the time of purchase.
(2) Due to the level of detail requested by the honourable member, it is asked that the member place this portion of the question on notice.