The center portion of the lane:

Question

Drippings from cars tend to accumulate in an oily strip in the center of each lane. This area usually still offers enough traction for safe motorcycle operation, unless it is raining.

Accepted Answer

Has an accumulation of oil and grease but usually provides enough traction for safe riding.

Answer

Should be always avoided.

Answer

Does not allow other motorists to see you in most instances.