Estimating Costs and Benefits of Transportation Corridor Alternatives

1997 ◽  
Vol 1606 (1) ◽  
pp. 115-123
Author(s):  
Patrick Decorla-Souza ◽  
Brian Gardner ◽  
Michael Culp ◽  
Jerry Everett ◽  
Chimai Ngo ◽  
...  
Keyword(s):  
Decision Making ◽  
Travel Demand ◽  
Salt Lake ◽  
Salt Lake City ◽  
Costs And Benefits ◽  
Benefit Cost Analysis ◽  
Demand Models ◽  
Data Output ◽  
Lake City ◽  
Benefit Cost

Although benefit-cost assessment is a useful tool in structuring the decision making process, it has not generally been used to assist in multi-modal decision making in metropolitan areas. Also, although detailed zone-to-zone trip information can be obtained from metropolitan travel-demand models, this information is not currently used by planners in developing detailed information on cross-modal comparisons of costs and benefits. A real-world application of benefit-cost analysis for multi-modal decision making using detailed zone-to-zone trip data output from travel-demand models for the I-15 corridor in Salt Lake City is presented. The analysis was conducted at two levels: corridor and region-wide. The research suggests that, when major investments are to be evaluated, the analyst should be very cautious in performing corridor-level analyses when such a trip-based approach is used, because of significant effects on the evaluation caused by traffic diverted into (or out of) the corridor.

scholarly journals Geospatial-Temporal and Demand Models for Opioid Admissions, Implications for Policy

2019 ◽  
Vol 8 (7) ◽  
pp. 993 ◽  
Author(s):  
Lawrence Fulton ◽  
Zhijie Dong ◽  
F. Benjamin Zhan ◽  
Clemens Scott Kruse ◽  
Paula Stigler Granados
Keyword(s):  
Salt Lake ◽  
Salt Lake City ◽  
Temporal Analysis ◽  
Explanatory Models ◽  
Demand Analysis ◽  
Admission Rates ◽  
Financial Variables ◽  
Country Level ◽  
Demand Models ◽  
Lake City

Background: As the opioid epidemic continues, understanding the geospatial, temporal, and demand patterns is important for policymakers to assign resources and interdict individual, organization, and country-level bad actors. Methods: GIS geospatial-temporal analysis and extreme-gradient boosted random forests evaluate ICD-10 F11 opioid-related admissions and admission rates using geospatial analysis, demand analysis, and explanatory models, respectively. The period of analysis was January 2016 through September 2018. Results: The analysis shows existing high opioid admissions in Chicago and New Jersey with emerging areas in Atlanta, Salt Lake City, Phoenix, and Las Vegas. High rates of admission (claims per 10,000 population) exist in the Appalachian area and on the Northeastern seaboard. Explanatory models suggest that hospital overall workload and financial variables might be used for allocating opioid-related treatment funds effectively. Gradient-boosted random forest models accounted for 87.8% of the variability of claims on blinded 20% test data. Conclusions: Based on the GIS analysis, opioid admissions appear to have spread geographically, while higher frequency rates are still found in some regions. Interdiction efforts require demand-analysis such as that provided in this study to allocate scarce resources for supply-side and demand-side interdiction: Prevention, treatment, and enforcement.

Applying Innovative Performance Metrics for Corridor Evaluation

2018 ◽  
Vol 2672 (44) ◽  
pp. 93-102
Author(s):  
Maria Vyas ◽  
Jeffery Harris ◽  
Ted Knowlton ◽  
G. J. LaBonty ◽  
Ronald T. Milam ◽  
...  
Keyword(s):  
Performance Metrics ◽  
Salt Lake ◽  
Salt Lake City ◽  
Level Of Service ◽  
Cost Ratio ◽  
Widespread Application ◽  
Innovative Performance ◽  
Benefit Cost Analysis ◽  
Benefit Cost Ratio ◽  
Benefit Cost

Widespread application of traditional performance metrics such as vehicle level of service has resulted in transportation networks that are often suited for only one mode of transportation to the detriment of others. Moreover, the continued investment in capacity expansion intended to meet level of service expectations increases financial burdens on transportation agencies for the capital, operating, and maintenance costs of these facilities, without regard to whether those resources are being used efficiently. Shifting focus to alternative and more comprehensive performance metrics can result in a more economical approach to transportation infrastructure, allowing communities to understand what investment combinations provide the best bang for the buck. Innovative performance metrics also allow communities to consider priorities beyond level of service, and design infrastructure accordingly. The Wasatch Front Central Corridor Study, undertaken in the Salt Lake City metropolitan area, is one example of a regional application of efficiency-focused performance metrics such as person throughput, seat utilization, benefit–cost ratio, access to employment, and economic impacts. Further research opportunities could include development of best practices to standardize benefit–cost analysis for transportation projects, other methods of evaluating overall system efficiency, and the role of parking policy and land use change in maximizing use of transportation resources.

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