This question has probably been asked before, but I don't recall the answer... What sort of adjustments do people make with CTPP data, to deal with the extreme "long-distance" commuters that are actually just "temporarily re-assigned" workers? This is not an error in the CTPP collection or summary process, but rather a result of the way the long form questions were answered. For example, here is a record that got "expanded" to four people: -- The Place of Residence is a County in Alaska -- The Place of Work is a County in Texas (Dallas) -- The commute time is 20 minutes What this is saying is that the person isn't really commuting each day from their home in Alaska, but is instead commuting to a place in Dallas County from some temporary residence (a hotel, perhaps) within the Dallas-Fort Worth area. Such an extreme example is easy to recognize, but what about other examples which fall into the "not sure" category when it comes to whether a person's normal place of residence is really the point where they are truly starting their commute trip? Perhaps a very high "average speed" based on "travel time" and "straight-line distance" could be used to flag such records? Ken Cervenka North Central Texas COG -----Original Message----- From: Pheny Smith [mailto:pheny.smith(a)bts.gov] Sent: Thursday, May 06, 2004 11:04 AM To: ctpp-news(a)chrispy.net Cc: Jeff Butler; Deepak Virmani; Cheryl Young Subject: [CTPP] Release of CTPP Part 3 Flat ASCII files ** High Priority ** Dear CTPP Users, Thanks to the BTS Transtats team's effort, the preliminary CTPP 2000 Part 3 files are now available for download via the BTS Transtats Website. These files are in Flat ASCII File format. The website is: www.bts.gov, Click on Data, then on CTPP 2000. For questions on the Flat ASCII files, please contact Nanda Srinivasan (Nanda.srinivasan(a)fhwa.dot.gov) or Clara Reschovsky (Clara.a.reschovsky(a)census.gov). For problems on downloading files, please contact Deepak Virmani (Deepak.virmani(a)bts.gov). Pheny Smith, Ph. D. Statistician Office of Advanced Studies Bureau of Transportation Statistics (202) 366-2817