watching. the drivers may be able to see you but they will be less likely to be aware of you. in addition, the closer you get to the edge of the roadway the more likely you are to run into road debris like stones, rocks, gravel, sand, sticks, glass, garbage, bits and pieces of metal and other junk that has been swept to the side of the road by rain and passing cars. riding through this stuff is dangerous and you want to avoid it whenever possible.
unless a road is extremely narrow, traffic lanes are usually wide enough for a car to comfortably pass you when you are riding on 