That's a good question, David. I think that transportation planning and modeling is trying to become more responsive to user demands, which requires consideration of factors such as comfort, convenience and status. Here is a new report on the subject: TCRP (2014), "Characteristics of Premium Transit Services that Affect Choice of Mode," Transit Report 166, Cooperative Research Program (TCRP), Transportation Research Board; at www.trb.org/main/blurbs/170601.aspx. Sincerely, Todd Litman ([log in to unmask]) Victoria Transport Policy Institute (www.vtpi.org) Office: 250-360-1560 | Mobile: 250-508-5150 1250 Rudlin Street, Victoria, BC, V8V 3R7, CANADA Efficiency - Equity - Clarity -----Original Message----- From: Universities Transport Study Group [mailto:[log in to unmask]] On Behalf Of Ashmore, David Sent: April 29, 2014 9:31 AM To: [log in to unmask] Subject: [UTSG] non measureable aspects of transport choice Dear all Scanning the transport choice literature, there seems to have been a noticeable increase from about 2003 in papers dealing with the non measurable aspects of transport choice such as status, symbolism, control, feelings, power etc. This shift in emphasis has been noted by others. Assuming people agree with this, would anyone be able to suggest why such a shift took place? Many thanks, Dave