Road Rules and Traffic Law for Western Australian Motorcyclists
The rules that matter most on two wheels
Western Australian road law applies to motorcycles exactly as it does to cars, but several rules carry extra weight for riders. You must hold a current licence for the class of motorcycle you ride, display the correct plate, and carry your licence when riding. Learner and provisional riders face restrictions on engine capacity and power-to-weight ratio, on carrying pillion passengers, and on riding certain high-powered machines; questions often test the specific limits rather than general principles, so learn the numbers rather than assuming.
Positioning, lanes and filtering
A rider is entitled to a full lane and must not share a lane side-by-side with another vehicle except when overtaking or when two motorcyclists agree to ride abreast, which is lawful in WA. Lane filtering - moving between slow or stationary traffic at low speed - is permitted only for fully licensed riders, only when traffic is stationary or moving slowly, and never in a school zone during school hours, never at a speed above the filtering limit, and never on a road with a continuous centre line or on a verge or footpath. Lane splitting at highway speed is illegal. Traps: questions blur filtering and splitting, or imply learners may filter.
Signals, intersections and priority
Signal before every change of direction and cancel afterwards - a common failure for riders whose indicators do not self-cancel. At intersections obey give-way and stop rules, turn from the correct position, and remember that a motorcycle turning across traffic is subject to the same priority rules as any vehicle. Do not ride on footpaths, nature strips or pedestrian areas unless signposted.
Worked example
A question asks whether a fully licensed rider may filter between two lanes of traffic moving at 40 km/h in a school zone at 2 pm. Answer: no - filtering requires traffic to be stationary or moving slowly and is prohibited in school zones during school hours regardless of licence class.