AN elderly woman was killed last night when she was struck by a motorcycle while crossing Morley Drive in Dianella.
About 7:50pm a black Kawasaki motorcycle struck the 86-year-old, who was crossing the road near Tame Court.
She suffered serious injuries and was rushed to Royal Perth Hospital but later died.
The rider, a 24-year-old male from Morley sustained non-life threatening injuries and was also conveyed to RPH for treatment.
The incident was the third in a horror day on Perth roads.
There was another on Marshall Road, Malaga.
About 6:15pm a silver Hyosung motorcycle was travelling west near Beringarra Avenue when it hit a street sign.
The 29-year-old male rider from Lockridge sustained life-threatening injuries and was conveyed to Royal Perth Hospital by SJA.
He remains in a critical condition.
Meanwhile, a 66-year-old man died and two other people were injured when two trucks and a car collided in Banjup.
About 3:50pm, a collision occurred between a white Caterpillar truck, a silver Toyota Camry sedan and a white Hino truck near the intersection of Jandakot and Warton roads.
All vehicles were travelling in the same direction.
Major Crash investigators are seeking anyone with dash cam footage or information to assist with either crash can contact Crime Stoppers on 1800 333 000.
Reports can be made online to www.crimestopperswa.com.au.