The following Speeding fines and Demerit points were valid in 2009, and published on the Western Australia Office of Road Safety website.
| Fine | Demerit Points | Km/h over the speed limit |
| $75 | 0 | Not more than 9 km/h |
| $150 | 2 | More than 9 km/h but not more than 19 km/h |
| $300 | 3 | More than 19 km/h but not more than 29 km/h |
| $700 | 5 | More than 29 km/h but not more than 40 km/h |
| $1,000 | 7 | More than 40 km/h |
Police can impound the vehicles of drivers who exceed the speed limit by more than 45 km/h.
Double demerit points apply on all long weekends and holiday periods.
http://www.ors.wa.gov.au/TopicsRoadSafety/Pages/Speeding.aspx
