By normal traffic lane I assume you mean something between narrow and wide? I feel that a lane should either be "normal" (standard width) or "wide" (wide enough for 2 vehicles to travel side by side...i.e. right turn lane not marked but a 2nd car can pull up to the right side of a car to make a right turn). The in-between width outside lanes are very annoying and very common where I am and I think they should be illegal.
Edited to change "By normal traffic lane I assume you mean something between normal and wide?" to "...between narrow and wide?"