Green Bay have them?
Al

"Steven P. McNicoll" wrote in message
ink.net...

"Allan9" wrote in message
. ..

They being the CONUS ARTCC
PDR = Preferential Departure Route
PDAR = Preferential DEparture Arrival Route
PAR = Preferential Arrival Route

Centers have them for most all terminal airspace.


They exist for busy terminal airspace, most terminal airspace does without
them.