on a single lane road is it legal to pass a car on the left side of the road by using the area to the right?

It is ILLEGAL to pass on the Berm of a the road, EVEN WHEN THE DRIVER IS TURNING LEFT. It is illegal to cross ANY solid line to pass. That's why they are SOLID. I hate when people who don't know the rules claim they do and claim that illegal acts are fine/legal. If you cross someone on the berm of the road you CAN be cited for Driving in a lane not designated for driving(or something like that). Just because people DO it doesn't mean it is legal. People run red lights and stop signs, that doesn't make it legal.

Single Lane Road

It is defintetely legal as long as you have a broken yellow line. I have passed a few cars at a time before on a broken yellow line. It is of course illegal to speed, but you know that. As long as you stay around the speed limit, and it's a broken yellow line on your side, then you can pass as many cars as you want at a time.

only if that car in front of you is turning left otherwise

TICKET if a cops see you beside

wwhat you do if someone other driver had broken down there?

or a car was parked there?

No. Only to the left. Otherwise, you're stuck.

Passing on the right is ALWAYS illegal and stupid to attempt

yes im pretty sure it is. but then again, its not illegal if you dont get caught. right?

but yeah im pretty sure it is

Not where I live. (NH, USA)

you are allowed only if there is no incoming trafic

haha yes