Development of a Comprehensive Regional Congestion Management System: Lessons in Integrating System Management with Planning and Programming

Author(s):  
Ted Matley ◽  
David Saladino

A remaining management system requirement is for major metropolitan areas to develop congestion management systems (CMS). These systems must identify and evaluate congestion and select mitigation strategies on the basis of systemwide analysis. In addition, congestion relief strategies must be selected that emphasize operational and demand management strategies in favor of, or in coordination with, new highway capacity. The CMS provides a level of analysis on a regional scale, but it can also guide additional studies that may be required at the subarea, corridor, or project level. This provides an important link between regional and subregional planning efforts and ensures that the policies to guide strategy selection are maintained throughout the process. In addition, a well-designed CMS can eliminate duplication of effort and support later major investment study or National Environmental Policy Act of 1969 planning work to streamline the planning effort. The CMS is an integrated part of the metropolitan planning process, but congestion mitigation must be considered in a larger context and with consideration given to other planning factors. WILMAPCO developed a four-step CMS process that included system identification, congestion identification, strategy evaluation, and system monitoring. The CMS was also developed through a strong interagency effort, including the input of planning and project development staff at member implementing agencies, who have the responsibility to use the CMS products to guide further planning and project development efforts. Although additional work is required, the WILMAPCO CMS will support planning work and influence policy debate regarding transportation investment priorities and regional quality-of-life goals.

Author(s):  
Douglas S. McLeod

FHWA and FTA have proposed a combined process for integrating transportation and environmental planning. A major feature of the process is conducting corridor and subarea studies to reach a decision on design concept and scope in planning before a project enters a preliminary engineering phase. These corridor and subarea studies facilitate decisions by metropolitan planning organizations (MPOs) and refinement of their long-range plans, analyses of alternatives, and analyses of demand reduction and operations required of congestion management systems. As developed to date, the combined process is seen primarily as applying to major investment studies. As part of its congestion management system, Florida (the Department of Transportation, MPOs, and others) addressed corridor and subarea studies, major investment studies, and the proposed combined process. Furthermore, the Florida congestion management system task team found that the combined process may have many beneficial aspects, addressed state and MPO institutional roles in reaching decisions on design concept and scope, and is evaluating the extension of the combined process to arterial investments and interchange justification analyses. By extending the process to these other projects and reaching a decision on design concept and scope in planning, the needs and alternatives analyses required by the National Environmental Policy Act could be obtained earlier, possibly improving and shortening the decision-making process. Overviews of the combined process and Florida actions that may lead to extending the process beyond major investment studies are presented. Florida actions include supporting pilot arterial investment studies to be coordinated by MPOs with funding provided by the state.


1998 ◽  
Vol 1617 (1) ◽  
pp. 130-138
Author(s):  
Joseph S. Shalkowski

The 1991 Intermodal Surface Transportation Efficiency Act placed new emphasis on transportation planning. In response, FHWA and FTA issued Joint Statewide and Metropolitan Planning Regulations (23 C.F.R §450). These regulations call for two studies, the congestion management system (CMS) analysis and the major investment study (MIS), which must be completed to analyze the best use of the existing transportation network and to determine whether and what transportation investments are needed in a metropolitan area. The intent is to use these studies as input to the metropolitan planning organization’s long-range transportation plan. The Pennsylvania Turnpike Commission (PTC) and the Southwestern Pennsylvania Regional Planning Commission (SPRPC) cooperatively developed and implemented an effective approach to navigate the Mon/Fayette Route 51 to Pittsburgh transportation project through a collaborative process integrating the CMS analysis and MIS. This approach also met the requirements of the Pennsylvania Department of Transportation’s (PennDOT’s) Preliminary Alternatives Analysis, one in a series of studies required under PennDOT’s National Environmental Policy Act (NEPA) implementing guidelines. PTC’s goal to advance a preferred major investment alternative into the next phase of project development was accomplished when SPRPC endorsed the integrated CMS analysis/MIS and preliminary alternatives analysis report. Presented is a success story in the effort to integrate the metropolitan planning and NEPA processes at the project programming level. It is hoped that the planning and NEPA principles applied can serve as a model to advance other transportation projects.


2021 ◽  
Vol 8 ◽  
Author(s):  
Daniel Robledo ◽  
Erika Vázquez-Delfín ◽  
Yolanda Freile-Pelegrín ◽  
Román Manuel Vásquez-Elizondo ◽  
Zujaila Nohemy Qui-Minet ◽  
...  

Mass blooms and stranding of pelagic Sargassum spp. in the Atlantic, termed Sargassum events are becoming more frequent in response to several factors: nutrient enrichment, increased temperature, changes in climatological patterns, but some causes remain unknown. The magnitude of Sargassum events in the Caribbean Sea since 2011 make us aware of the necessity to tackle these events, and macroalgal blooms generally, not only locally but on a regional scale. At least three pelagic species of Sargassum have been dominant in the blooms that have occurred along Caribbean coastlines in great quantities. Due to the regional scale of these events and its complexity, its management should be based on basic and applied information generated by different collaborative actors (national and international) through interdisciplinary and transdisciplinary work. To address this, we propose different phases (exploratory, valorization, and management) and the approach for their study should include detection, collection, stabilization and experimentation. This information will help identify the potential applications and/or ecological services to develop for the exploitation and mitigation strategies in the region. Relevant challenges and opportunities are discussed, remarking on the necessity to evaluate the spatiotemporal variation in the abundance and chemical composition of floating and stranded biomass. The above-mentioned will provide management strategies and economic opportunities as possible solutions to their extensive impact in the Caribbean.


Author(s):  
Linda B. Dixon

The Gainesville Mobility Plan Prototype was developed as the congestion management system plan for Gainesville, Florida, and incorporated level-of-service (LOS) performance measures for bicycle and pedestrian facilities. The LOS evaluations describe the degree of bicycle and pedestrian accommodation in a transportation corridor. The bicycle LOS measures are designated basic facility provided, conflicts, speed differential, motor vehicle LOS, maintenance, and provision of transportation demand management programs or intermodal links. Pedestrian LOS criteria are similar and incorporate specific pedestrian features. The Gainesville bicycle and pedestrian LOS performance measures use a point scale resulting in an LOS rating system of A through F. The scoring system was developed with sensitivity to characteristics that may be mutually exclusive or inclusive to determine all possible combinations of points. The methodology hypothesizes that there is a critical mass of variables that must be present to attract nonmotorized trips. The methodology is applicable for corridor evaluations on arterial and collector roadways in urban or suburban areas. The criteria include measures of programmatic and off-street projects such as rail-trails, bicycle parking, bikes-on-transit, employer-based programs, and so forth, in addition to traditional on-street facility improvements. By measuring such improvements recommendations for more diverse projects can be supported. This analysis was applied to several roadways with promising results that generally corresponded to user perceptions of the facilities. LOS evaluation was used as a tool of the congestion management system to develop project recommendations and priorities, but it may also be useful in concurrency and long-range transportation planning.


Author(s):  
Palanisami K ◽  
Suresh Kumar D ◽  
Mohanasundari T

Droughts are a common occurrence in semi-arid areas and their frequency and intensity is expected to increase further with increasing variability in rainfall distribution. Based on a study of 120 farmers from 4 districts in Karnataka and Tamil Nadu, this paper identified the range of measures farmers adopt in response to droughts. Despite significant negative externalities, farmers assign higher priority to drilling new wells rather than investing in water conservation structures or demand management strategies. Among the different strategies followed, adoption of drip irrigation and purchase of tanker water for providing life-saving irrigation to perennial crops yield the highest financial return. Expansion of micro irrigation and reuse of municipal waste water are suggested as drought mitigation strategies.


Author(s):  
Tatiana V. Kakatunova ◽  
M. V. Maksimkin ◽  
E. A. Sorokin

The features of the formation of the anti-crisis management system for special-purpose enterprises are considered. Anti-crisis management strategies in industry are proposed


2010 ◽  
Vol 3 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Paul O. Downey ◽  
Moira C. Williams ◽  
Leonie K. Whiffen ◽  
Bruce A. Auld ◽  
Mark A. Hamilton ◽  
...  

AbstractRecognition that alien plants pose a significant threat to biodiversity has not always translated into effective management strategies, policy reforms, and systems to establish priorities. Thus, many alien plant management decisions for the protection of biodiversity occur with limited knowledge of what needs to be protected (other than biodiversity in a generalized sense) or the urgency of actions. To rectify this, we have developed a triage system that enables alien plant management decisions to be made based on (1) the urgency of control relative to the degree of threat posed to biodiversity, compared with (2) the likelihood of achieving a successful conservation outcome as a result of alien plant control. This triage system is underpinned by a two-step approach, which identifies the biodiversity at risk and assesses sites to determine priorities for control. This triage system was initially developed to manage the threat posed by bitou bush to native species in New South Wales (NSW), Australia. It has subsequently been improved with the national assessment of lantana in Australia, and the adaptation from a single to multiple alien plant species approach on a regional scale. This triage system identifies nine levels of priority for alien plant management aimed at biodiversity conservation, ranging from immediate, targeted action to limited or no action. The development of this approach has enabled long-term management priorities to be set for widespread alien plants that are unlikely to be eradicated. It also enables control to occur in a coordinated manner for biodiversity conservation at a landscape scale, rather than as a series of individual unconnected short-term actions.


Author(s):  
Kristina M. Currans ◽  
Gabriella Abou-Zeid ◽  
Nicole Iroz-Elardo

Although there exists a well-studied relationship between parking policies and automobile demand, conventional practices evaluating the transportation impacts of new land development tend to ignore this. In this paper, we: (a) explore literature linking parking policies and vehicle use (including vehicle trip generation, vehicle miles traveled [VMT], and trip length) through the lens of development-level evaluations (e.g., transportation impact analyses [TIA]); (b) develop a conceptual map linking development-level parking characteristics and vehicle use outcomes based on previously supported theory and frameworks; and (c) evaluate and discuss the conventional approach to identify the steps needed to operationalize this link, specifically for residential development. Our findings indicate a significant and noteworthy dearth of studies incorporating parking constraints into travel behavior studies—including, but not limited to: parking supply, costs or pricing, and travel demand management strategies such as the impacts of (un)bundled parking in housing costs. Disregarding parking in TIAs ignores a significant indicator in automobile use. Further, unconstrained parking may encourage increases in car ownership, vehicle trips, and VMT in areas with robust alternative-mode networks and accessibility, thus creating greater demand for vehicle travel than would otherwise occur. The conceptual map offers a means for operationalizing the links between: the built environment; socio-economic and demographic characteristics; fixed and variable travel costs; and vehicle use. Implications for practice and future research are explored.


2021 ◽  
Author(s):  
Melissa Latella ◽  
Arjen Luijendijk ◽  
Carlo Camporeale

<p>Coastal sand dunes provide a large variety of ecosystem services, among which the inland protection from marine floods. Nowadays, this protection is fundamental, and its importance will further increase in the future due to the rise of the sea level and storm violence induced by climate change. Despite the crucial role of coastal dunes and their potential application in mitigation strategies, the phenomenon of the coastal squeeze, which is mainly caused by the urban sprawl, is progressively reducing the extents of the areas where dune can freely undergo their dynamics, thus dramatically impairing their capability of providing ecosystem services.</p><p>Aiming to embed the use of satellite images in the study of coastal foredune and beach dynamics, we developed a classification algorithm that uses the satellite images and server-side functions of Google Earth Engine (GEE). The algorithm runs on the GEE Python API and allows the user to retrieve all the available images for the study site and the chosen time period from the selected sensor collection. The algorithm also filters the cloudy and saturated pixels and creates a percentile-composite image over which it applies a random forest classification algorithm. The classification is finally refined by defining a mask for land pixels only. </p><p>According to the provided training data and sensor selection, the algorithm can give different outcomes, ranging from sand and vegetation maps, beach width measurements, and shoreline time evolution visualization. This very versatile tool that can be used in a great variety of applications within the monitoring and understanding of the dune-beach systems and associated coastal ecosystem services. For instance, we show how this algorithm, combined with machine learning techniques and the assimilation of real data, can support the calibration of a coastal model that gives the natural extent of the beach width and that can be, therefore, used to plan restoration activities. </p>


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