Passing on the right is permitted on a one-way street and when another vehicle is turning left.
Passing on the right may only be done when it is safe to do so and cannot be done if it entails moving off the paved or main-traveled road.
Preview Yielding Required
The law is clear about what to do when someone tries to overtake you. Whether you agree with the other driver's action or not, you should allow him or her to pass. It’s the safe thing to do.
Preview
Preview Maintaining Speed
Maintain a steady speed. Do not speed up until the other driver has passed you and returned to the driving lane. You may even need to slow down to allow the other vehicle back in if the driver is running out of room.