Proceedings of the 2002 Annual National Conference on Digital Government Research, 2002
We present ongoing work on developing an automated integration system for freight flow analysis a... more We present ongoing work on developing an automated integration system for freight flow analysis and planning. To overcome the limitations of current estimation methods for commodity flows, we use reliable secondary sources, such as employment data, and derive estimates in a principled way by means of a computational workflow. When available, we extract the data automatically from online sources, so that the system maintains the estimations continuously updated. This project will allow planners and policymakers to make more informed decisions by accessing the most recent data and enhance the ability to explore different scenarios.
Neighborhood type matters when we try to explain variations in public transit commuting. We found... more Neighborhood type matters when we try to explain variations in public transit commuting. We found this statistical link over a sample of all census tracts in the four largest California metro areas. In this research, we used statistical cluster analysis to identify twenty generic neighborhood types. The variables used in the analysis included broad indicators of location and population density, street design, transit access and highway access. Once identified, the denser neighborhoods had higher transit use, other things equal. Yet, what distinguishes the research is that we did not use a simple density measure to differentiate neighborhoods. Rather, density was an important ingredient of our neighborhood-type definition --which surpassed simple density in explanatory power.
This research estimates the transport-related busi-ness interruption impacts of the 1994 Northrid... more This research estimates the transport-related busi-ness interruption impacts of the 1994 Northridge earthquake using a spatial allocation model, SCPM (the Southern California Planning Model) and sur-veys of businesses and individuals. Total business interruption losses ...
Policy makers interested in evaluating the costs and benefits of earthquake retrofit and reconstr... more Policy makers interested in evaluating the costs and benefits of earthquake retrofit and reconstruction strategies require a way to measure the benefits (costs avoided) of competing proposals. This requires an integrated, operational model of losses because of earthquake impacts on transportation and industrial capacity, and how these losses affect the metropolitan economy. This research examines several dimensions in the search for a "full-cost" measure of the economic impact of a 7.1 Elysian Park earthquake: structural damage, business interruptions, the effects of network disruption (increased travel costs and changes in trip behavior), and bridge repair costs (including supply-related additional labor inputs and endogenous price effects).
... The repercussions of hurricane Katrina (and hurri-cane Rita that happened soon after) continu... more ... The repercussions of hurricane Katrina (and hurri-cane Rita that happened soon after) continue until today and beyond into the future. However, most of the efforts now are focusing on housing provision, social reconstruction and community development. ...
Highway expansion projects in large metropolitan areas are usually contentious. What are the full... more Highway expansion projects in large metropolitan areas are usually contentious. What are the full effects of highway capacity gains and who wins and who loses? This research elaborates our earlier network impact modeling work in two important directions. First, we extend our modeling capability to include highway lanes that are tolled. Second, we apply the new model to an important prototype application, the (recently) private 10-mile segment of California SR91. The possible widening of this route via extra tolled or extra general-purpose lanes has been the subject of considerable controversy. We show that our approach can shed light on key elements of such controversies and, thereby, possibly reduce political conflict and misunderstanding. We also show that whereas congestion tolls are widely presumed to be efficient, the efficiency outcomes are complex when only a very small part of the network is tolled.
We summarize an integrated, operational model of losses due to earthquake impacts on transportati... more We summarize an integrated, operational model of losses due to earthquake impacts on transportation and industrial capacity, and how these losses affect the metropolitan economy. The procedure advances the information provided by transportation and activity system analysis techniques in ways that help capture the most important economic implications of earthquakes. Network costs and origin-destination requirements are modeled endogenously and consistently. Indirect and induced losses associated with direct impacts on transportation and industrial capacity are distributed across zones and economic sectors. Preliminary results are summarized for a magnitude 7.1 earthquake on the Elysian Park blind thrust fault in Los Angeles. Work on incidence and distributional consequences continues, including evaluation of post-event reinvestments.
Proceedings of the 2002 Annual National Conference on Digital Government Research, 2002
We present ongoing work on developing an automated integration system for freight flow analysis a... more We present ongoing work on developing an automated integration system for freight flow analysis and planning. To overcome the limitations of current estimation methods for commodity flows, we use reliable secondary sources, such as employment data, and derive estimates in a principled way by means of a computational workflow. When available, we extract the data automatically from online sources, so that the system maintains the estimations continuously updated. This project will allow planners and policymakers to make more informed decisions by accessing the most recent data and enhance the ability to explore different scenarios.
Neighborhood type matters when we try to explain variations in public transit commuting. We found... more Neighborhood type matters when we try to explain variations in public transit commuting. We found this statistical link over a sample of all census tracts in the four largest California metro areas. In this research, we used statistical cluster analysis to identify twenty generic neighborhood types. The variables used in the analysis included broad indicators of location and population density, street design, transit access and highway access. Once identified, the denser neighborhoods had higher transit use, other things equal. Yet, what distinguishes the research is that we did not use a simple density measure to differentiate neighborhoods. Rather, density was an important ingredient of our neighborhood-type definition --which surpassed simple density in explanatory power.
This research estimates the transport-related busi-ness interruption impacts of the 1994 Northrid... more This research estimates the transport-related busi-ness interruption impacts of the 1994 Northridge earthquake using a spatial allocation model, SCPM (the Southern California Planning Model) and sur-veys of businesses and individuals. Total business interruption losses ...
Policy makers interested in evaluating the costs and benefits of earthquake retrofit and reconstr... more Policy makers interested in evaluating the costs and benefits of earthquake retrofit and reconstruction strategies require a way to measure the benefits (costs avoided) of competing proposals. This requires an integrated, operational model of losses because of earthquake impacts on transportation and industrial capacity, and how these losses affect the metropolitan economy. This research examines several dimensions in the search for a "full-cost" measure of the economic impact of a 7.1 Elysian Park earthquake: structural damage, business interruptions, the effects of network disruption (increased travel costs and changes in trip behavior), and bridge repair costs (including supply-related additional labor inputs and endogenous price effects).
... The repercussions of hurricane Katrina (and hurri-cane Rita that happened soon after) continu... more ... The repercussions of hurricane Katrina (and hurri-cane Rita that happened soon after) continue until today and beyond into the future. However, most of the efforts now are focusing on housing provision, social reconstruction and community development. ...
Highway expansion projects in large metropolitan areas are usually contentious. What are the full... more Highway expansion projects in large metropolitan areas are usually contentious. What are the full effects of highway capacity gains and who wins and who loses? This research elaborates our earlier network impact modeling work in two important directions. First, we extend our modeling capability to include highway lanes that are tolled. Second, we apply the new model to an important prototype application, the (recently) private 10-mile segment of California SR91. The possible widening of this route via extra tolled or extra general-purpose lanes has been the subject of considerable controversy. We show that our approach can shed light on key elements of such controversies and, thereby, possibly reduce political conflict and misunderstanding. We also show that whereas congestion tolls are widely presumed to be efficient, the efficiency outcomes are complex when only a very small part of the network is tolled.
We summarize an integrated, operational model of losses due to earthquake impacts on transportati... more We summarize an integrated, operational model of losses due to earthquake impacts on transportation and industrial capacity, and how these losses affect the metropolitan economy. The procedure advances the information provided by transportation and activity system analysis techniques in ways that help capture the most important economic implications of earthquakes. Network costs and origin-destination requirements are modeled endogenously and consistently. Indirect and induced losses associated with direct impacts on transportation and industrial capacity are distributed across zones and economic sectors. Preliminary results are summarized for a magnitude 7.1 earthquake on the Elysian Park blind thrust fault in Los Angeles. Work on incidence and distributional consequences continues, including evaluation of post-event reinvestments.
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Papers by Peter Gordon