"Mark Hansen" wrote in message
...
On 6/20/2005 12:30, Teranews wrote:
On a sectional chart, around cities, are yellow areas.
What are they?
Where on the legend can this be found?

These represent the congested parts of the cities. This should
(roughly) match the look of the city when lit up at night.
...
http://www.naco.faa.gov/index.asp?xml=naco/online/aero_guide

Useful pointer--thanks!

Note though that it refers to "populated" places, not "congested" places.
"Congested" has technical meaning in the FARs (regarding altitude rules),
and it's not clear whether "populated" means the same thing.

--Gary