White Lines, Yellow Lines, Solid Lines, Broken Lines What’s the difference between yellow lines and white lines? Good question! Road Lines Video: Yellow lines separate traffic moving in different directions. White lines separate traffic moving in the same direction (same direction, one-way streets, freeways, HOV lane, etc.) The yellow line should – in general – always be to your left. Lane changing is allowed over broken white lines (when safe): Lane changing is not allowed over solid white lines (It is illegal): Passing is technically allowed with extra caution over one solid yellow line (if and when safe), at your discretion: Passing is allowed in either direction over one dotted yellow line – if and when safe – at your discretion: Passing is not allowed against double yellow solid lines (It is illegal): Passing is allowed over a solid yellow line with a broken yellow line only if the broken line is closest to you. (If the solid line is closest to you, it is illegal for you to pass): Pop Quiz! If you are driving on this one-way ramp and you see these lines, which direction should the car be going? Is it traveling toward us or away from us? If you guessed this way, then you’re correct. Remember that the yellow line should be on your LEFT. If the yellow line is on your RIGHT, then you’re on the wrong side of the road. From the ICBC Book: Read more: Can I turn left across yellow lines into a driveway? Hope that helps.