[sustran] Re: Is TDM avoid or shift?

[Todd Alexander Litman]

Thanks Carlos! 

Yes, I recommend defining Transportation Demand Management (TDM) broadly to
include any strategy that changes travel behavior to increase transportation
system efficiency. It excludes changes in the vehicle drive technology
(e.g., it does not include hybrid or electric vehicles) but includes both
mode shifts (from automobile to walking, cycling and public transit) and
travel reduction strategies (pricing reforms, more compact community
development, telework). Carsharing is a TDM strategy to the degree that it
allows some households to reduce their vehicle ownership which leverages
reductions in their total vehicle travel. 


Sincerely,
Todd Litman
Victoria Transport Policy Institute (www.vtpi.org)
litman at vtpi.org
facebook.com/todd.litman
Office: 250-360-1560; Mobile: 250-508-5150
1250 Rudlin Street, Victoria, BC, V8V 3R7, CANADA
"Efficiency - Equity - Clarity"


-----Original Message-----
From: sustran-discuss-bounces+litman=vtpi.org at list.jca.apc.org
[mailto:sustran-discuss-bounces+litman=vtpi.org at list.jca.apc.org] On Behalf
Of Sunny ICLEI
Sent: October-29-13 8:07 AM
To: Carlos Felipe Pardo
Cc: Global 'South' Sustainable Transport
Subject: [sustran] Re: Is TDM avoid or shift?

My understanding of TDM is not one single tool or strategy. It is a
collection of tools there are tools that support the Avoid idea and some
that support the SHIFT idea. 

I am sure if Todd Litman is reading this he will shed more light on this. He
is the creator of the wonderful TDM toolkit http://www.vtpi.org/tdm/

Quoting Todd

" Transportation Demand Management (TDM, also called Mobility Management) is
a general term for strategies that result in more efficient use of
transportation resources"

hope this helps
cheers
sunny


On 29 Oct 2013, at 15:43, Carlosfelipe Pardo <carlosfpardo at gmail.com> wrote:

> Ok, probably this has been discussed before, but I'd like to pose the 
> question to see people's views:
> 
> Under the ASI (avoid shift improve) approach, is TDM avoid or shift? 
> Or both?
> 
> Happy to hear everyone's views. I say shift!
> 
> Carlos.
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equitable and sustainable transport with a focus on developing countries
(the 'Global South').