Reliability-based analysis of highway geometric Elements: A systematic review

Afolayan, Abayomi; Samson, Oladapo Abiola; Easa, Said M.; Alayaki, Funmilayo Modupe; Folorunso, Olusegun

doi:10.1080/23311916.2021.2004672

Cited by 8 publications

(5 citation statements)

References 43 publications

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“…IHSDM also supports the evaluation module for design consistency [16]. Te review shows that operating speed consistency [17,18], trafc volume and crash consistency [19,20], vehicle stability and driver workload consistency [21], and design consistency of highway elements as well as sight distance consistency [22,23] were considered to be the research focus.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Tey enable designers to visualize clear-sight triangles, simulate curves and grades, identify concealed dangers, and analyze collisions from multiple angles [26]. Studies have demonstrated that 3D alignment design signifcantly improves safety over 2D methods [23]. For example, 3D models optimise sight distance on hills and around curves based on the eye height of the driver more efectively [27].…”

Section: Literature Reviewmentioning

confidence: 99%

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Safety Evaluation for Highway Geometric Design Based on Spatial Path Properties

Wang

2023

Journal of Advanced Transportation

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Safety is an important aspect of road design. In highway geometric design, road engineers use a two-stage design method due to its convenience, but the available two-dimensional design tools on the market are believed to impose limitations. Horizontal and vertical alignment parameters are considered and determined at the designer’s discretion, potentially downplaying the three-dimensional characters of spatial curves. This study focuses on the three-dimensional characteristics of highway alignments and investigates a safety evaluation method to establish the relationship between crash rate and spatial curve properties. This will necessitate an analytical investigation into the effects of higher-order properties, such as curvature and torsion, on the geometry of spatial Cartesian curves. First, these combinations of horizontal and vertical alignments were categorized into six classifications, each with its own spatial expression in mathematical form. After manipulating the curvature and torsion of the spatial curve algebraically, the correlation between geometric design variables and crash rate was ultimately established. A few cases involving geometric design data and crash facts were utilized for verification. The results revealed a considerable positive correlation between curvature or torsion variance and crashes per million vehicles kilometers, as a slight difference between curvature and torsion could also be spotted. And curvature distribution is correlated with collision frequency more closely than torsion spatial variation.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Safety Evaluation for Highway Geometric Design Based on Spatial Path Properties

Wang

2023

Journal of Advanced Transportation

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“…Another study succeeded in determining the minimum radius required for RHCs on the highway based on vehicle stability using a dynamic model to simulate truck behavior in different alignments. The results showed that an increase in the minimum radius requirement for RHC is needed to maintain driver comfort levels and avoid potential rollovers [4]. In their research, Garcia et al wants to solve road safety, since the effect of truck squads causes a reduction in visibility on horizontal curves [5].…”

Section: Introductionmentioning

confidence: 99%

“…Second, in some cases the designer may need to deviate from the standards due to some limitations. The goal of applying reliability theory to geometric highway design is to establish and promote a more consistent and reliable design process [4].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the visibility distance with the Istram program on third-class roads with a high accident rate

Barzola,

Colán,

Silvera

et al. 2023

Proceedings of the 21th LACCEI International Multi-Conference for Engineering, Education and Technology (LACCEI 2023): “Leaders

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In Peru there are many roads where accidents occur due to their inadequate geometric design. The traffic accidents with the most incidents are of the side collision or collision type with a percentage of 42.73%, and distraction with 20.19% [1]. This shows that it is necessary to carry out a redesign on this road that seeks to reduce the percentage of accidents in the area. For the case study, a section of a 3km highway located in Santiago de Chuco, north of the city of Lima, was used. Thanks to the photogrammetric record of the current state of the road, sectors with geometric deficiencies were identified, such as visibility distance and safety in terms of precariousness in the use of signaling.Likewise, the evaluation carried out in the stopping and overtaking visibility distance concludes that with a constant speed of 30 km/h there are stretchs or sections that do not meet the necessary distance for its route.

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“…Therefore, the value is a measure of the valuation of the agricultural suitability of the land for agricultural production [24]. When selecting a location for a motorway, designers estimate the width of the adverse impact zone of the linear project on its surroundings [25][26][27]. It ranges from 15 to 30 m, but green belts could reduce the impact range of the motorway from 90 to 50 m [24].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Motorway Impact on Agricultural Land with a Simplified Method and GIS Data as a Tool for Selecting the Optimal Route

2022

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The highway network has to grow because of the increasing vehicle use, the effort to improve road safety, and the needs generated by economic development and efficient international transport. The negative impact of the motorway on agricultural holdings in its vicinity can be determined with general agricultural land valuation methods. However, this approach necessitates an in-depth analysis of land cultivated by each farm, which is rather labour-intensive. Impact on agricultural land should be assessed after the detailed plans for constructing a motorway are ready or even after construction. Nevertheless, simplified methods can be applied as early as the preliminary design stage or when evaluating potential alternative routes. Less labour-intensive, these methods can determine the harmful impact of a motorway on agricultural land with sufficient accuracy. The simplified and automated method presented for assessing the impact of a motorway on agricultural land uses GML files to automatically acquire data for the calculations, using the linear nature of the motorway. The prepared input data is then processed to optimally place the motorway in space. The final step is the visualisation of the road investment. The process has been automated to facilitate rapid analysis and employment of the data in linear project modelling and assessments of available options.

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Reliability-based analysis of highway geometric Elements: A systematic review

Cited by 8 publications

References 43 publications

Safety Evaluation for Highway Geometric Design Based on Spatial Path Properties

Safety Evaluation for Highway Geometric Design Based on Spatial Path Properties

Evaluation of the visibility distance with the Istram program on third-class roads with a high accident rate

Assessment of Motorway Impact on Agricultural Land with a Simplified Method and GIS Data as a Tool for Selecting the Optimal Route

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