Perth will soon have streets where cars have to slow down and follow bicycles.

The State Government has christened them bicycle boulevards.

An artist's impression of the bike boulevard proposed for Leake Street in Bayswater.

Transport Minister Dean Nalder described the new thoroughfares as low-speed streets where cyclists have priority along with local traffic.

"We want to provide people with the infrastructure so they can leave the car at home and cycle for short trips," Mr Nalder said.