Safety performance functions for crash severity on undivided rural roads

Russo, Francesca; Busiello, Mariarosaria; Dell’Acqua, Gianluca

doi:10.1016/j.aap.2016.04.016

Cited by 36 publications

(33 citation statements)

References 16 publications

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“…In detail, besides the HSMbased prediction, the two local predictive methods reported in Section 2.5 (Eqs. 6 and 7), proposed by namely Cafiso et al [28], and Russo et al [30]; are considered. This has not to be intended as an assessment of the considered methods themselves, but rather as a simulation of the decision process between different predictive methods to be used by practitioners, in case of presence of locally available models.…”

Section: Selection Of Alternative Predictive Methodsmentioning

confidence: 99%

“…Taking the countermeasures for site PP1 listed in Table 3 as a reference, the sets A, B and C could not be assessed through local predictive methods [28,30] for the scenarios before and after interventions. In fact, markers, rumble strips, signs, trees, speed control, friction and road barriers are not variables of the local models.…”

Section: Selection Of Alternative Predictive Methodsmentioning

confidence: 99%

“…For this aim, the SPFs developed for Italian rural two-lane roads by Cafiso et al [28], as multi-variable equation; and by Russo et al [30], as local base SPF and associated CMFs; were selected. The applicability and the results obtained through these methods were compared with the results and feasibility of a calibrated HSM SPF for local conditions [48].…”

Section: Selection Of Alternative Predictive Methodsmentioning

confidence: 99%

“…[27][28][29][30], for rural two-lane European roads (based on German, Italian and Portuguese segments); [31] for rural Italian motorways; [32] for signalized intersections in Canada; [33] for motorcycle crashes on Malaysian primary roads; [34] for bicycle accidents in the US. An important source of SPFs for different areas and road types, is the online repository of the EU Project PRACT [35].…”

Section: Transferability Of Predictive Methodsmentioning

confidence: 99%

“…Results were also compared with other similar tools currently available in the Italian context, namely the SPFs developed by Cafiso et al [28], and Russo et al [30] by highlighting possible differences and transferability issues. Anyway, the proposed method could be applicable in all the contexts where local data and studies are lacking; and where practitioners face the practical problem of assessing safety performances and improvements at specific sites.…”

Section: Objectives and Research Questionsmentioning

confidence: 99%

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Integrated American-European protocol for safety interventions on existing two-lane rural roads

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et al. 2017

Eur. Transp. Res. Rev.

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Purpose The main purpose was to integrate two strategies for road safety analyses (qualitative: audits, inspections; and quantitative: accident predictions) and develop a possible protocol for the safety interventions on existing two-lane rural road segments. Those road sections do not typically belong to the TEN-network, to which the 2008/96/EC Directive is mainly oriented. Hence, they could lack of methods for designing safety-based interventions. The main research questions were:& Which possible problems can arise from the application of this protocol to real cases? & Which data are practically needed? & Which possible solutions can be provided for the highlighted problems?Methods The integrated protocol, including: 1) the HSM predictive method, 2) the EU Regulations, 3) the local road design standards, 4) some research developments; is applied to real two-lane rural road segments requiring safety-based interventions. Its application is divided in the typical road safety analysis stages. Results A wide list of possible problems was highlighted and addressed: 1) lack of data, 2) difficult comparison with current road standards in order to identify safety problems, 3) lack of methods for evaluating the skidding risk along the layout, 4) setting speed limits, 5) need for optimizing the selection of countermeasures based on their aims and their timely application, in different recurrent situations, 6) availability and comparison of predictive methods.Conclusions Based on the problems and solutions discussed, main advantages (1) the systematic approach, 2) the quantitative assessment of benefits, 3) the possible transferability) and disadvantages (difficulties in overcoming the lack of data and calibrated accident prediction models) of the method were remarked.

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Section: Selection Of Alternative Predictive Methodsmentioning

confidence: 99%

Section: Selection Of Alternative Predictive Methodsmentioning

confidence: 99%