"Mxsmanic" wrote in message
...
If you are following a road or river or other feature on the ground while
flying VFR, and that feature runs north/south but often veers off to one
side
or the other, are you expected to change your altitude each time you move
from
a heading of 0-179 to 180-359 or vice versa?

No, that was only put in the regs to confuse people that never fly anything
but desktop computers.