White stripes on the side of the road indicates the edge of the road and usually means that rumble strips are on the side of the road depending on the road.
The white lines painted on the pavement indicate traffic traveling in your direction and broken white lines means that you may change lanes if it is safe to do so.
If the white lines are solid white lines then those solid white lines require you to stay within the lane and also marks the shoulder of the roadway.
Yellow lines in the roadway indicate and mark the center of a two way road used for two way traffic.