The findings Alan noted have been consistent over time and are always a little disquieting
to someone who happens on them and then loses some confidence in the data. I do think
folk underestimate the extent to which car loaning goes on in some sociodemographic
groups. Part of the reason those millennials don't own cars is because they are still
driving mommy or daddy's car. Using extended family member, friends or neighbors
vehicles is quite common in many areas. Yes it would be nice if we had data confirmation.
Steve Polzin
-----Original Message-----
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces@chrispy.net] On Behalf Of
Ken.Cervenka(a)dot.gov
Sent: Friday, July 24, 2015 2:49 PM
To: ctpp-news(a)chrispy.net
Subject: Re: [CTPP] Commuters Who Drive Alone but Do Have Access to a Vehicle
I don't have clear "facts" to share at my fingertips, but this kind of
situation occurs in other survey environments as well. I suspect Alan's thoughts are
somewhat correct, but it would sure be nice to back this up with examples from personal
interview surveys (in-the-field intercepts or CATI approaches) where there was a
"logic check" for occurrences where a person indicated they drove alone, but yet
they previously answered a "vehicles in the household" question by saying none.
So a well-done logic check might at least prompt the interviewer to ask for a
clarification. I am, however, not aware of this actually being fielded.
-----Original Message-----
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces@chrispy.net] On Behalf Of
ALANPISARSKI
Sent: Thursday, July 23, 2015 9:51 AM
To: ctpp-news(a)chrispy.net
Subject: Re: [CTPP] Commuters Who Drive Alone but Do Have Access to a Vehicle
This has been around too long to be explained by car2go or others like it but it may be
adding to the numbers. We have often just attributed it to using friends' cars or
uncle Harry's. some may interpret the census question which asks about household
vehicles available as not pertaining to a company car. Depends how they interpret family
or available. We have seen the rise in this and in "Other" with the Census
unable to explain it or give greater info for us to interpret. We need a small study of
"Other". I have interpreted Other to be, e.g., a school bus driver who brings
the bus
home-but it's not a household vehicle available. AEP
-----Original Message-----
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces@chrispy.net]
On Behalf Of Greta Ryan
Sent: Thursday, July 23, 2015 9:26 AM
To: ctpp-news(a)chrispy.net
Subject: Re: [CTPP] Commuters Who Drive Alone but Do Have Access to a Vehicle
No, he didn't give any numbers he was just explaining how car sharing works and what
someone could use it for. He didn't explicitly say it was happening. You could
probably talk with the car share company in Cambridge.
I would think they would be interested in your situation.
-----Original Message-----
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces@chrispy.net]
On Behalf Of Cook, Cliff
Sent: Thursday, July 23, 2015 9:10 AM
To: <ctpp-news(a)chrispy.net>
Subject: Re: [CTPP] Commuters Who Drive Alone but Do Have Access to a Vehicle
Greta
Was Nick Hill able to provide any numbers to back this up? We do have a robust car share
network in Cambridge so that could be part of the answer.
Cliff
Sent from my iPhone
On Jul 23, 2015, at 8:52 AM, "Greta Ryan"
<GRyan(a)richmondregional.org>
wrote:
Cliff,
I was just at an ITSVA conference where Nick Hill from Car2Go spoke.
Possibly these
people use such a service to commute.
Greta Ryan
Senior Planner
Richmond Regional Planning District Commission Suite 200
9211 Forest Hill Avenue
Richmond VA 23235
(804) 323-2033
Richmond Regional TPO
-----Original Message-----
From: ctpp-news-bounces(a)chrispy.net
[mailto:ctpp-news-bounces@chrispy.net]
On Behalf Of Cook, Cliff
Sent: Thursday, July 23, 2015 8:41 AM
To: ctpp-news(a)chrispy.net
Cc: Krause, Henry
Subject: [CTPP] Commuters Who Drive Alone but Do Have Access to a
Vehicle
We are preparing an analysis of the 2006-10 CTPP flow data to support
our
transportation planning program. An issue that has come up is that we are
seeing a small but noticeable proportion of commuters who state they have 0 vehicles
available but whose primary commute mode is driving alone. Aside from the obvious
explanation of making a mistake when completing the ACS survey can anyone provide thoughts
on how we might explain this anomaly?
Thanks
Cliff Cook
Clifford Cook, Planning Information Manager Cambridge Community
Development
Department
344 Broadway, Cambridge, MA. 02139
www.cambridgema.gov/CDD
ccook(a)cambridgema.gov
M: 8:30-8:00 T-Th: 8:30-5:00 F: 8:30-Noon
617/349-4656
617/349-4669 FAX
617/349-4621 TTY
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