White versus yellow
White lines separate lanes of traffic moving in the same direction. Yellow lines separate lanes of traffic moving in opposite directions. If you are traveling on the right side of a yellow line, you are on the correct side of a two-way road; if a yellow line is to your right, you are driving the wrong way and should pull off immediately.
Solid versus dashed
A dashed line means you may cross it for legal lane changes or passing. A solid line means you should not cross it. Two solid lines mean crossing is prohibited. A combination — one solid and one dashed — means crossing is allowed only from the dashed side.
Stop lines and crosswalks
A solid white line across the road at an intersection is the stop line. Stop with your front bumper behind it — not over it. The crosswalk follows the stop line; pedestrians have the right of way in any marked or unmarked crosswalk.
Lane arrows
Arrows painted on the pavement tell you which direction a lane is for. A straight arrow means the lane continues; a curved arrow means the lane is for turning. If you find yourself in a turn-only lane and want to go straight, complete the turn and find a place to safely turn around — do not try to merge across at the intersection.