The most common of all, a broken white line indicates that you can change the lane, but with caution. Drawn on either a one-way road or a two-way road (where traffic is coming from both the sides), a broken white line will help you overtake, but after you have checked for any approaching traffic.
Unlike the broken white line, a solid white line is only drawn on a two-way road and it indicates that you can’t overtake the vehicle ahead, or simply put, you are not allowed to change the lanes and should stay in the lane you are already on.
Yet another marking on the two-way road is a single solid yellow line. The yellow line indicates that passing or overtaking a vehicle is allowed, but crossing the yellow line is not allowed. This is why, a single yellow line is also drawn on the side of the lanes, indicating the end of the road. This rule, however, may vary from state to state.
A double yellow line is a painted marking separating two lanes of a road. It consists of two parallel, solid yellow lines, and its presence usually indicates a no-passing restriction or no passing zone, where crossing the line is prohibited.
Like the broken white line, while driving over the broken yellow line, one can pass the vehicles, but with caution.
Combine the above two and you get the combination of the solid yellow line with a broken yellow line. Meaning, if you are driving on the side of the broken line, you can’t overtake any vehicle. But if you’re driving on the solid line, you can overtake.