A közlekedésépítési szakterület mérnöki és tudományos folyóirata. ISSN: 2064-0919
15. szám
9. évfolyam
2021 július
15
Bejegyzés

Nemzetközi szemle: Január

Közlekedési vagyongazdálkodás a tervektől a gyakorlatig
Transportation Asset Management from Plans to Practice
Szerző(k):
Transportation Research Board, USA

Terjedelem: 52 oldal

Transportation asset management (TAM) in state departments of transportation (DOTs)—or in other transportation agencies as well—refers to a strategic and systematic process of operating, maintaining, and improving physical assets, with a focus on both engineering and economic analyses based on quality information. The goal of TAM is to identify a structured sequence of maintenance, preservation, repair, rehabilitation, and replacement actions that will achieve and sustain a desired state of good repair—at minimum practicable cost over the life of the assets. Formalized TAM began in the 1980s, when a few agencies used pavement and bridge management systems. The following decade saw the approval of federal transportation legislation—the Intermodal Surface Transportation Efficiency Act (ISTEA)—for which six TAM systems were required. At this time, FHWA created the Office of Asset Management and AASHTO created the Subcommittee on Asset Management. Interest in TAM began to grow as agencies struggled with growing needs and limited resources. The 2000s brought a greater use of bridge and pavement management systems and greater use of TAM principles in everyday agency activities. Some states established policies that linked decisions to performance measures and good data; others implemented enterprise TAM software systems. In 2011, AASHTO published its Transportation Asset Management Guide: A Focus on Implementation, and in 2012, the Moving Ahead for Progress in the 21st Century Act (MAP-21) passed with requirements that state DOTs develop risk-based TAM plans for pavements and bridges in the National Highway System (NHS). The number of states using TAM policies and procedures has grown steadily over the years, as has the interest in TAM by DOTs at meetings and conferences. When the AASHTO TAM Subcommittee was established in the early 2000s, many committees saw sparse meeting attendance—mostly just the committee members themselves. But once MAP-21 was passed, committee meeting rooms filled to capacity. The requirement to implement a formal TAM system captured the attention of state DOTs, metropolitan planning organizations (MPOs), transit agencies, and consultants. The 2006 TAM conference attracted approximately 250 attendees; 468 participants from all 50 states attended the 2014 TAM conference. Sessions have ranged from “Putting the TAM Pieces Together” (2009) to “Peer-to-Peer: Detailed Looks at MAP-21 Pilot States” (2014). As TAM leaders become more sophisticated, so does their need for knowledge and help from their peers at other transportation agencies. This is especially true in light of the ongoing TAM rulemaking process for MAP-21. The comment period for the rulemaking ended on the date of this workshop, May 31, 2015; the timing was fortuitous as it brought together many DOT representatives with questions and concerns about the proposed MAP-21 TAM plan rule. As state DOTs become increasingly aware that MAP-21 will likely require the reprioritization of resources to support TAM efforts, they look to their neighbors for best practices. Peer exchanges such as this workshop are an ideal way to initiate that state-to-state sharing.
 

A világ közúti alagútjainak áttekintése
Review of Overseas Tunnels
a letöltéshez ingyenes regisztráció szükséges
Szerző(k):
Tofler, S., Eady, P.,
Austroads Australia

Terjedelem: 158 oldal

The purpose of Austroads technical research project, TS1878 – Review of Overseas Tunnels, was to perform a review of international road tunnels, to identify best practices in tunnel construction and maintenance and to assist in the formulation of more affordable tunnel solutions in Australasia.
This project has been designed to assemble information on the construction and operation of a large number of recently completed road tunnels from across the world. With this information it was proposed that standards applicable to road tunnel construction in Australasia be reviewed to reduce the costs of designing, building and operating Australasian road tunnels. This project was not able to obtain a high level of quality tunnel information which could be used in identifying best practices in international tunnel construction and maintenance, however, a large number of tunnels (122) were identified across Europe, Asia, North and Central America, Australia and New Zealand, for which at least partial information was obtained on the targeted attributes to be collected.
 

Ausztrál útügyi szaklexikon (2015. évi kiadás)
Austroads Glossary of Terms (2015 Edition)

a letöltéshez ingyenes regisztráció szükséges
Szerző(k):
MG Lay Library, ARRB Group,
Austroads Australia

Terjedelem: 181 oldal

The Austroads Glossary of Terms provides an A-Z list of more than 3,000 road transport terms with definitions. The Glossary of Terms was developed to bring consistency to the use of terms and definitions by Austroads members and other stakeholders in the road and transport industry. It also helps users of Austroads publications by providing supporting information for the terms used in the Austroads body of work. This 2015 edition not only includes new terms selected from Austroads work published in 2014, but also incorporates two related works: the Roads and Maritime Services ITS Glossary of Maintenance Terms and Definitions, and the National Heavy Vehicle Regulator Glossary of Common Terms.
 

Információ kinyerés bizonytalan adatok felhasználásával
Expanding Information by Utilising Uncertain Data
a letöltéshez ingyenes regisztráció szükséges

Szerző(k):
Kadar, P., Thoresen, Th., Martin, T.,
Austroads Australia

Terjedelem: 24 oldal

Recent developments in computer technology combined with the advent of data condensation technologies have opened new ways to analyse and explore data. This report details an exploratory use of a full set of time series rutting data from a long-term pavement performance (LTPP) site in condition calculations. Using a full data set, as opposed to single aggregated measures, such as the mean, currently used in pavement deterioration assessments, allows practitioners to more accurately evaluate pavement condition and target maintenance. Data condensation techniques were used, converting the data set into an HTML text string that can be stored in a single Excel cell. This allows the full data to be employed in calculations instead of a single number. The work presented in this report challenges well-established practices and procedures. It is anticipated that these readily available new techniques will benefits the road construction and maintenance industries in many ways.
 

Kerékpárosok útbaigazítása: szakirodalmi áttekintés
Bicycle Wayfinding: Literature Review
a letöltéshez ingyenes regisztráció szükséges
a letöltéshez ingyenes regisztráció szükséges
Szerző(k):
Harris, M., Salomon, W.,
Austroads Australia

Terjedelem: 112 oldal

This report documents the bicycle directional signage and wayfinding systems currently in use in seven major cycling nations and in seven Australian and New Zealand jurisdictions. It provides a detailed analysis of the way directional signs are used in these jurisdictions studying issues such as: relevant guidelines; sign types; layout and design of signs (including colour and typeface); route branding and numbering; marking of named facilities; the use of map signs; pavement markings for wayfinding assistance; sign system planning methodology; sign mounting systems; innovative and useful sign applications and other implementation issues. Recommendations for updating directional sign guidelines have been published in a separate report AP-R492-15 Bicycle Wayfinding.
 

A kötöttpályás közlekedés és a laksűrűség összefüggése közepes méretű városokban
Light rail transit and residential density in mid-size cities
Szerző(k):
Flannery, D., Duarte, R., Norman, B., O’Donnell, T., Sinclair, H. and Steffen, W.,
University of Canberra, Australia

Terjedelem: 82 oldal

This paper has addressed the relationship of the level or intensity of urban density with the provision and operation of adjacent light rail infrastructure. The relationship is symbiotic—contemporary sustainable urban planning must be aligned with sustainable transport planning to achieve good urban outcomes. But for Canberra, the question that has long been posed: how can transit operate successfully, and provide the associated financial, social and environmental advantages without being supported by a sufficient level of density, i.e. for communities in need of transit that do not necessarily have the density to make light rail feasible? A density analysis has highlighted that population and dwelling densities are correlated and already increasing along the Flemington–Northbourne corridor, particularly in already established population centres, as part of the ACT Government’s urban intensification planning strategy. Case studies on similarly sized cities—Adelaide, Freiburg, Bergen and Edmonton—have highlighted the potential impacts on urban density from light rail systems. A longitudinal study to identify changes to population and dwelling density as a result of the light rail and assess the indirect effects associated with land use changes would assist future planning and management around the light rail corridor in Canberra. The impact of rezoning and precinct planning is a critical aspect of this analysis.
 

Az élettartam értékelés szerepe az útépítés és fenntartás üvegház hatású gáz kibocsátásának csökkentésében
The Role of Life Cycle Assessment in Reducing Greenhouse Gas Emissions from Road Construction and Maintenance
Szerző(k):
Harvey, J., Kendall, A., Saboori, A.,
University of California, USA

Terjedelem: 21 oldal

This white paper summarizes the state-of-knowledge and state-of-the-art in pavement Life Cycle Assessment (LCA) modeling, with particular emphasis on life cycle Greenhouse Gas (GHG) emissions and on interpretation and analysis that lead to GHG reductions from the on-road transportation sector. This white paper synthesizes research from a number of previous and current projects, highlighting both broadly agreed upon methods and findings, and those that are emerging or currently debated. The goal is to inform federal, state, and local policymakers; pavement industry professionals; private pavement owners; and transportation and other researchers about the significance and role of pavement LCA in understanding and mitigating the negative environmental consequences of the pavement sector.
 

Jelzőlámpa időtervezési kézikönyv Második kiadás
Signal Timing Manual Second Edition
Szerző(k):
Transportation Research Board, USA

Terjedelem: 317 oldal

In addition to covering basic and advanced signal timing concepts, this second edition of the Signal Timing Manual addresses establishment of a signal timing program including setting multimodal operational performance measures and outcomes, determining staffing needs, and monitoring and maintaining the system. Some of the advanced concepts addressed include the systems engineering process; adaptive signal control; preferential treatment (e.g., rail, transit, and emergency vehicles); and timing strategies for oversaturated conditions, special events, and inclement weather. The manual will be useful to traffic engineers and signal technicians at any agency operating traffic signals.
 


Hozzászólás

Az e-mail címet nem tesszük közzé. A kötelező mezőket * karakterrel jelöltük