Apart from that, the No Passing Zone sign has a yellow background with black letters and a thick red border, whereas the Do Not Pass sign has a black background with white letters and thin red borders ...

You can find it on the left side, and sometimes, it's paired with a white rectangular Do Not Pass sign on the right. Not all roads with solid yellow lines automatically come with the No Passing ...

"In Ontario, lane markings generally serve an advisory or warning function and by themselves do not ... a free pass to pass anytime. If there's a sign saying no passing, then passing's not allowed ...