A Specified Procedure for Distress Identification and Assessment for Urban Road Surfaces Based on PCI

Loprencipe, Giuseppe; Pantuso, Antonio

doi:10.3390/coatings7050065

Cited by 51 publications

(37 citation statements)

References 23 publications

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“…where W k,I are the frequency weightings in one-third octave bands for seated position, provided by the standards, and a iz is the vertical RMS acceleration for the i-th one-third octave band. This method ( Figure 3) allowed the evaluation of the vertical accelerations in order to analyze the comfort of car passengers [39,45,46].…”

Section: Methodsmentioning

confidence: 99%

Raised Pedestrian Crossings: Analysis of Their Characteristics on a Road Network and Geometric Sizing Proposal

Loprencipe¹,

Moretti²,

Pantuso³

et al. 2019

Applied Sciences

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In urban areas traffic-calming strategies and pedestrian friendly measures are often adopted to reduce the adverse impacts of motor vehicles on vulnerable users. This study surveyed 24 raised pedestrian crossings (RPCs) to examine their geometrical and functional characteristics. Geometric characteristics, location, administrative and effective vehicle speed, and the whole-body vibration acceleration induced to vehicle occupants while they are passing over, were considered. In addition to the analysis of the field data, geometrical and functional criteria to design RPCs were carried out. Particularly, two design approaches have been considered. In the first one, RPC provides a designated route across a carriageway raised to the same level, or close to the same level, as the sidewalks that provide access to the pedestrian crossing. In such condition, an RPC is not a traffic-calming device and its design should satisfy geometrical and comfort criteria for designing roads. The results from the surveys demonstrated that less than 10% of RPCs guarantee ride comfort. According to the second design approach, an RPC acts both as a marked pedestrian feature and as a traffic-calming device (i.e., it is trapezoidal in shape with sharp edges). The analysis of the vertical accelerations on vehicle occupants reveal that more than 90% of the surveyed RPCs comply with geometrical and dynamic criteria for speed tables. Extreme variations concerning the observed geometrical characteristics of RPCs and the modelled dynamic performances have been observed: It results in noneffective treatments. Therefore, the results of this study would contribute to providing geometric best practices for overcoming the regulation gap in this subject, and designing RPCs according to international standards. pedestrian infrastructures is increasing [15,16]. Over the years, different systems have been adopted to reduce the risk of vehicle-pedestrian collisions, especially in urban areas. Speed control undulations (SCUs) are traffic-calming units that aim to increase pedestrian safety, as well as reduce noise and pollution from traffic in residential areas.Undulations are usually installed on residential, local, or collector roads; at any rate, these urban roads should not have buses, emergency traffic or, in general, heavy traffic, and should have an administrative speed limit of 20 or 30 km/h [5,17]. A warning sign with an adequate speed limit sign should be installed before an undulation [1,18]. When 15% of traffic exceeds the speed limit by 8-16 km/h the enforcement band is not effective [19], and the road manager could evaluate the installation of SCUs and/or other traffic-calming systems.Raised pedestrian crossings (RPCs) are used in urban areas to increase the walkability of neighborhoods [20] and to reduce the probability of pedestrian injuries and fatalities after a crash, either within specific traffic-calming programs, or more generally within Sustainable Urban Mobility Plans, with increased road safety being one of the main priorities in th...

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Section: Methodsmentioning

confidence: 99%

Raised Pedestrian Crossings: Analysis of Their Characteristics on a Road Network and Geometric Sizing Proposal

Loprencipe¹,

Moretti²,

Pantuso³

et al. 2019

Applied Sciences

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“…The number of cars and mopeds varied accordingly to the traffic spectrum in Table 2. The increase in traffic volume required to adjust the road pavement composition [43] and its related construction and maintenance works in order to achieve the required level of service [44]. The new flexible pavement is composed of 5 cm-thick asphalt wearing course, 8 cm-thick asphalt binder course, 17 cm-thick asphalt base course, and 15 cm-thick granular sub-base.…”

Section: Resultsmentioning

confidence: 99%

Life Cycle Analysis of Road Construction and Use

2019

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Both the construction and use of roads have a range of environmental impacts; therefore, it is important to assess the sources of their burdens to adopt correct mitigation policies. Life cycle analysis (LCA) is a useful method to obtain demonstrable, accurate and non-misleading information for decision-making experts. The study presents a "cradle to gate with options" LCA of a provincial road during 60 year-service life. Input data derive from the bill of quantity of the project and their impacts have been evaluated according to the European standard EN 15804. The study considers the impacts of the construction and maintenance stages, lighting, and use of the vehicles on the built road. The results obtained from a SimaPro model highlight that the almost half of impacts took place during the construction stage rather than the use stage. Therefore, the adoption of environmentally friendly road planning procedures, the use of low-impact procedures in the production of materials, and the use of secondary raw materials could have the largest potential for reducing environmental impacts.

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“…Of the distress types, the main focus has been crack detection and analysis. This is due to the fact that pavement cracks are seen as the most predominant distress type [45] and they are also easier to measure, with the typical requirements being simply to measure the crack's width and length. There are a tremendous number of studies on developing specific neural networks for crack detection and analysis using both 2D and 3D imagery [41,42,[46][47][48][49][50][51][52] and with comparisons made to results from image-based toolboxes for crack detection and analysis such as CrackIT [53].…”

Section: The Use Of Deep Learning In Pavement Engineeringmentioning

confidence: 99%

“…Within this distribution, the most observed distresses are general cracking followed by viscoplastic deformations and then area cracking, with the least being the miscellaneous category. This is expected given the nature of distresses on most urban Italian road networks [45]. Using these distress types, a label map was generated for the previously identified TensorFlow pipeline.…”

Section: Data Annotationmentioning

confidence: 99%

Towards Low-Cost Pavement Condition Health Monitoring and Analysis Using Deep Learning

et al. 2020

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Governments are faced with countless challenges to maintain conditions of road networks. This is due to financial and physical resource deficiencies of road authorities. Therefore, low-cost automated systems are sought after to alleviate these issues and deliver adequate road conditions for citizens. There have been several attempts at creating such systems and integrating them within Pavement management systems. This paper utilizes replicable deep learning techniques to carry out hotspot analyses on urban road networks highlighting important pavement distress types and associated severities. Following this, analyses were performed illustrating how the hotspot analysis can be carried out to continuously monitor the structural health of the pavement network. The methodology is applied to a road network in Sicily, Italy where there are numerous roads in need of rehabilitation and repair. Damage detection models were created which accurately highlight the location and a severity assessment. Harmonized distress categories, based on industry standards, are utilized to create practical workflows. This creates a pipeline for future applications of automated pavement distress classification and a platform for an integrated approach towards optimizing urban pavement management systems.

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A Specified Procedure for Distress Identification and Assessment for Urban Road Surfaces Based on PCI

Cited by 51 publications

References 23 publications

Raised Pedestrian Crossings: Analysis of Their Characteristics on a Road Network and Geometric Sizing Proposal

Raised Pedestrian Crossings: Analysis of Their Characteristics on a Road Network and Geometric Sizing Proposal

Life Cycle Analysis of Road Construction and Use

Towards Low-Cost Pavement Condition Health Monitoring and Analysis Using Deep Learning

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