ABBREVIATIONS
The following symbols and abbreviations are used in this publication:
| 4WD | four-wheel drive |
| ABS | Australian Bureau of Statistics |
| ACT | Australian Capital Territory |
| Aust. | Australia |
| CAI | computer assisted interviewing |
| CO | carbon monoxide |
| DEH | Australian Government Department of the Environment and Heritage |
| km | kilometre |
| LFS | Labour Force Survey |
| LPG | liquefied petroleum gas |
| LRP | lead replacement petrol |
| NOx | oxides of nitrogen |
| NSW | New South Wales |
| NT | Northern Territory |
| OECD | Organisation for Economic Co-operation and Development |
| Qld | Queensland |
| RSE | relative standard error |
| SA | South Australia |
| SE | standard error |
| Tas. | Tasmania |
| Vic. | Victoria |
| VOCs | volatile organic compounds |
| WA | Western Australia |