The Impact of Traffic Sign Quality on the Frequency of Traffic Accidents
As part of an overall traffic signalling system, traffic signs warn the traffic participants, give information about the restrictions, prohibitions and obligations and provide additional information needed for a safe and undisturbed traffic flow. The traffic sign quality is expressed by its retroreflection and it is particularly pronounced in conditions of reduced visibility. The aim of this paper is to analyse how traffic signs quality affects the frequency of traffic accidents in low visibility conditions. For this purpose, traffic accidents and the quality of traffic signs were analysed on 130 state roads in the Republic of Croatia between 2013 and 2015. In the analysis several variables were used: the number of traffic accidents occurred under reduced visibility conditions, length of the road, AADT (Annual Average Daily Traffic) and the number of traffic signs that do not meet the minimum prescribed values of retroreflection. Statistical analysis showed a positive correlation between the accidents and unsatisfactory traffic signs, i.e. that with the increase in the number of traffic sings that do not have a satisfactory level of retroreflection, an increase in the number of accidents in reduced visibility conditions is expected.
Scukanec A, Babic D, Sokol H. Methodology for Measuring Traffic Signs Retroreflection. European Scientific Journal, Special Edition. 2014;3: 135-142.
OECD/ITF. Spending on Transport Infrastructure: Trends, Policies, Data. 2013. Available from: https://www.itf-oecd.org/spending-transport-infrastructure-1995-2011
European Union Road Federation. Improved Signage for Better Roads. An ERF Position Paper towards improving Traffic Signs in European Roads. Bruxelles; 2015. Available from: https://issuu.com/erf9/docs/erf_position_paper_on_vertical_sign
Fakultet prometnih znanosti, Zavod za prometnu signalizaciju. Kontrola kvalitete retrorefleksije horizontalne i vertikalne signalizacije na državnim cestama s prikupljanjem podataka za ažuriranje baze cestovnih podataka. Zagreb; 2013-2015.
Adminaite D, Jost G, Stipdonk H, Ward H. Ranking EU progress on road safety. Bruxelles: European Transport Safety Council; 2016. Available from: https://etsc.eu/10th-annual-road-safety-performance-index-pin-report
Republic of Croatia. Ministry of the Interior; 2014.
European Transport Safety Council. Cost Effective EU Transport Safety Measures. Bruxelles; 2003. Available from: https://ec.europa.eu/transport/road_safety/sites/roadsafety/files/specialist/knowledge/pdf/rsmref22%2520etsc%2520cost.pdf
Elvik R, Rydningen U. Effektkatalog for trafikksikkerhetstiltak. Oslo: Transportøkonomisk institutt; 2002. Available from: https://www.toi.no/getfile.php?mmfileid=2367
Department of Infrastructure and Transport. BITRE Evaluation of the National Black Spot Program. Canberra; 2012. Available from: https://bitre.gov.au/publications/2012/files/report_126_1.pdf
Madleňák R, Madleňáková L, Hoštáková D, Drozdziel P, Török A. The Analysis of The Traffic Signs Visibility During Night Driving. Advances in Science and Technology Research Journal. 2018;12(2): 71-76. Available from: doi:10.12913/22998624/92103
Plainis S, Murray IJ, Pallikaris IG. Road traffic casualties: understanding the night-time death toll. Inj Prev. 2006;12(2): 125-128. Available from: doi: 10.1136/ip.2005.011056
Meteorological and Hydrological Service of Croatia. Climate atlas of Croatia (1961-1990. 1971-2000.). Zagreb: Meteorological and Hydrological Service of Croatia; 2008.
Republic of Croatia. Ministry of the Sea, Transport and Infrastructure. Zagreb; 2019. Available from: http://www.mppi.hr/default.aspx?id=3113
Babic D, Babic D, Macura D. Model for Predicting Traffic Signs Functional Service Life – The Republic of Croatia Case Study. Promet – Traffic & Transportation. 2017 Jun;29(3): 343-349.
European Committee for Standardization. Fixed, vertical road traffic signs – Part 1: Permanent signs. EN 12899-1, 2008.
Hrvatske ceste d.o.o. Brojanje prometa na cestama Republike Hrvatske godine 2014. Zagreb; 2015. Available from: http://www.hrvatske-ceste.hr/default.aspx-?id=46
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