Riverside Drive crash: Passenger taken to Royal Perth Hospital after Transperth bus collides with car

Two people have been taken to hospital after a Transperth bus collided with a car in the Perth CBD.

St John WA, WA Police and the Department of Fire and Emergency Services rushed to the scene on Riverside Drive, near Victoria Avenue, about 7am on Tuesday.

Two people inside the car — a man in his 40s and a woman in her 30s — sustained injuries and were taken to Royal Perth Hospital.

There were no passengers inside the Transperth bus.

The crash is causing peak-hour traffic chaos, with Riverside Drive eastbound at Victoria Avenue closed.

Drivers have been warned of delays and have been told to seek an alternative route.

A crash on Russell Road eastbound has blocked the northbound entry ramp to Kwinana Freeway in Success, slowing traffic.

An ambulance and a tow truck are onsite.

Traffic is also slow on approach on the freeway northbound at Anketell Road in Mandogalup, with a car broken down in the right emergency lane.

Traffic is flowing again on Tonkin Highway southbound at Dunreath Drive near Perth Airport following a breakdown.

An earlier breakdown on Mitchel Freeway southbound before Vincent Street in Leederville is still causing traffic jams.