Keep right of where the sign is placed. A sign telling you to get to the far right lane would be telling you to merge right, and would be used either in conjunction with signs indicating the left lane(s) end(s), painted lines which deviate towards the right lane, and barrels and delineators (in instances of a work zone in which lanes are closed off).
Driving in the proper lane. In the United States this means driving in the lane that is on the right (---->) side of the road from the driver's perspective.
It means keep back.
Ok lets say you are driving in your lane on the right and the vehicles coming at you on your right lane the avoid maneuver would mean that you would swerve right NOT LEFT to avoid the collision. Because you never know if guy looked down to check where his cell phone fell or something and when he looks up he will swere back into his lane but you dont know if he will realize that he is in wrong lane before you two collide so you brake and swerve right
It means that your lane cannot pass.
A continuous white stripe parallel and to the right of your lane means that you are at the far right of lawful driving on the highway. This line is also called a 'fog line', as it helps the driver see where the edge of the highway is when it is foggy.
Keep right on
Depending on which country you are in. Generally it means 'Do not cross', keep to your your lane, no passing.
Left side lane
you wear it on the left wrist to mean your taken and on the right if your single
The slower traffic keep right sign means that drivers who choose to drive less than the speed limit should stay in the right-hand lane. For example, 18-wheelers going up a hill often experience decreased speed because of the weight they haul. Unless passing an even slower vehicle, the slower truckers need to stay in the right-hand lane. Vehicles driving significantly below posted speed limits should also use their flashers until they are able to match the posted speed limit.
That you cannot pull into that side of the lane and pass another car on either side of the lane. The Solid line means you cannot pass.
In general you should drive in the right lane and use the left lane only to pass when necessary. (On some stretches of I-20 and I-35 you'll see this posted.) If traffic is heavy, you should stay in the lane that's going the speed you want to drive; usually this is slower in the right lane and faster in the left lane. If by "four lane road" you mean four lanes in each direction, that's personal preference -- I leave the far left to the speed demons, the far right to people getting on and off, and second from the right to the tractor-trailers; my preference is second from the left. The goal is to allow traffic to flow smoothly. Going too slow in the "fast" lane causes traffic to back up (and get mad at you), and rapid lane changes can cause accidents. Pick a lane and stick to it, and go the same speed as those around you -- if everyone did this, we'd all get there on time.