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A case study of induced trips at mixed-use developments.

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Title: A case study of induced trips at mixed-use developments.
Authors: Sperry, Benjamin R.1 b-sperry@ttimail.tamu.edu, Burris, Mark W.1 mburris@civil.tamu.edu, Dumbaugh, Eric2 eric.dumbaugh@fau.edu
Source: Environment & Planning B: Planning & Design. Jul2012, Vol. 39 Issue 4, p698-712. 15p.
Subjects: Mixed-use developments, Land use, Community development, Traffic engineering, Trip generation, Air quality, Decision making
Abstract: Conventional thinking suggests that pedestrian-friendly, mixed-land-use developments will contribute to an overall reduction in travel by providing an alternative to automobile travel. However, these elements may serve to increase travel demand by reducing the overall cost of travel--a phenomenon generally known as 'induced' travel. To date, most studies of induced travel have focused on aggregate travel patterns, without examining how development patterns may influence people's trip-making decisions. To fill a void in the empirical research, we examine the potential for induced trip making at mixed-use developments by analyzing data obtained from a survey of travelers at a typical mixed-use site in suburban Dallas, Texas, USA. Our analysis found that during both the morning and afternoon study periods, at least some percentage of internal trips at the case-study site were induced, and not 'captured' from the external street network as is typically assumed. Induced trips by land-use pair and travel mode are also reported. Even with the induced trips, a reduction in regional vehicle-miles traveled can still be realized at mixed-use developments sites due to the propensity for those trips to be made on foot. Induced travel also has implications for the development of traffic-impact studies for proposed mixed-use sites, which generally assume that all internal trips are replacing external trips. Planners, policy makers, politicians, and other stakeholders exploring mixed-use developments as a land-use solution to urban traffic congestion and air-quality issues are encouraged to consider the implications of induced travel in the mixed-use environment. [ABSTRACT FROM AUTHOR]
Copyright of Environment & Planning B: Planning & Design is the property of Pion Ltd. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: A case study of induced trips at mixed-use developments.
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  Data: <searchLink fieldCode="AR" term="%22Sperry%2C+Benjamin+R%2E%22">Sperry, Benjamin R.</searchLink><relatesTo>1</relatesTo><i> b-sperry@ttimail.tamu.edu</i><br /><searchLink fieldCode="AR" term="%22Burris%2C+Mark+W%2E%22">Burris, Mark W.</searchLink><relatesTo>1</relatesTo><i> mburris@civil.tamu.edu</i><br /><searchLink fieldCode="AR" term="%22Dumbaugh%2C+Eric%22">Dumbaugh, Eric</searchLink><relatesTo>2</relatesTo><i> eric.dumbaugh@fau.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Environment+%26+Planning+B%3A+Planning+%26+Design%22">Environment & Planning B: Planning & Design</searchLink>. Jul2012, Vol. 39 Issue 4, p698-712. 15p.
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  Data: <searchLink fieldCode="DE" term="%22Mixed-use+developments%22">Mixed-use developments</searchLink><br /><searchLink fieldCode="DE" term="%22Land+use%22">Land use</searchLink><br /><searchLink fieldCode="DE" term="%22Community+development%22">Community development</searchLink><br /><searchLink fieldCode="DE" term="%22Traffic+engineering%22">Traffic engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Trip+generation%22">Trip generation</searchLink><br /><searchLink fieldCode="DE" term="%22Air+quality%22">Air quality</searchLink><br /><searchLink fieldCode="DE" term="%22Decision+making%22">Decision making</searchLink>
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  Data: Conventional thinking suggests that pedestrian-friendly, mixed-land-use developments will contribute to an overall reduction in travel by providing an alternative to automobile travel. However, these elements may serve to increase travel demand by reducing the overall cost of travel--a phenomenon generally known as 'induced' travel. To date, most studies of induced travel have focused on aggregate travel patterns, without examining how development patterns may influence people's trip-making decisions. To fill a void in the empirical research, we examine the potential for induced trip making at mixed-use developments by analyzing data obtained from a survey of travelers at a typical mixed-use site in suburban Dallas, Texas, USA. Our analysis found that during both the morning and afternoon study periods, at least some percentage of internal trips at the case-study site were induced, and not 'captured' from the external street network as is typically assumed. Induced trips by land-use pair and travel mode are also reported. Even with the induced trips, a reduction in regional vehicle-miles traveled can still be realized at mixed-use developments sites due to the propensity for those trips to be made on foot. Induced travel also has implications for the development of traffic-impact studies for proposed mixed-use sites, which generally assume that all internal trips are replacing external trips. Planners, policy makers, politicians, and other stakeholders exploring mixed-use developments as a land-use solution to urban traffic congestion and air-quality issues are encouraged to consider the implications of induced travel in the mixed-use environment. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Environment & Planning B: Planning & Design is the property of Pion Ltd. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Text: English
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      – SubjectFull: Mixed-use developments
        Type: general
      – SubjectFull: Land use
        Type: general
      – SubjectFull: Community development
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      – SubjectFull: Traffic engineering
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      – SubjectFull: Trip generation
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      – SubjectFull: Air quality
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      – SubjectFull: Decision making
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      – TitleFull: A case study of induced trips at mixed-use developments.
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              Text: Jul2012
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              Y: 2012
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