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Self - reported drivers’ behaviour : an application of DBQ in Poland

100%

Niezgoda M. , Kamiński T. , Kruszewski M. , Tarnowski A.

2013

tom Vol. 20, No. 1

233--238

Most of road accidents are caused by human error. To study these errors road safety researchers developed selfreported measures. DBQ (Driver Behaviour Questionnaire) is one of the most frequently used tools for studies carried out in scope of traffic psychology. It has become an international standard which is used by driver behaviour researchers, yet it is still quite unknown in Poland. The questionnaire describes aberrant behaviour of the drivers in two basic dimensions: errors and violations. The main purpose of following article is to present the theoretical principles underlying the human error model, structure of this tool and polish adaption of the questionnaire. Polish version of the DBQ has 32 items in total. Another aim of the study was to investigate the factorial structure of the DBQ presented in previous studies. The reported data included a sample of 467 drivers. Reliability coefficients were calculated for each scale and their value were around .80 representing high overall reliability. Our analysis indicates that the DBQ construct was fairly congruent with the one presented in the Swedish study. Behaviours were classified due to their factor loadings in following dimensions – violations, mistakes, inattention and inexperience. Seven behaviours have different factor loading, which indicates different psychological mechanism underlying these aberrations. Issues related to these findings are discussed.

Analiza wpływu stylu jazdy kierowców na emisję związków szkodliwych spalin i zużycie paliwa

75%

Bielaczyc P. , Pajdowski P. , Szczotka A.

tom R. 101, z. 6-M/1

87--94

W artykule przedstawiono analizę wpływu stylu jazdy kierowcy i dokładności przejazdu na emisję związków szkodliwych spalin (CO, HC, NOx, CO2) oraz zużycie paliwa samochodu z silnikiem o zapłonie iskrowym z wielopunktowym wtryskiem paliwa o poziomie emisji Euro 3, w czasie realizacji testów jezdnych NEDC na hamowni podwoziowej. Zaprezentowano przykładowe wyniki badań dla 3 różnych kierowców. Badania zostały przeprowadzone w Pracowni Toksyczności Spalin Zakładu Badań Silników OBR SM BOSMAL w Bielsku-Białej w ramach prac prowadzonych nad określeniem wpływu różnych czynników na niepewność pomiaru emisji w testach według przepisów ECE/EC i EPA.

This paper presents the influence of driving behaviour during emission test cycles performed on the chassis dynamometer on the exhaust emission (CO, HC, NOx) and fuel consumption (CO2) results for vehicle with a SI engine meets Euro 3 emission limits. The emission test results obtained for three different drivers have been presented and discussed. The tests subject to analyses presented above have been performed in Exhaust Emission Testing Laboratory of BOSMAL Automotive Research and Development Centre in Bielsko-Biala, Poland within the test program evaluating the accuracy of the method used for measurement of the emission of gaseous pollutants from vehicles with spark-ignition (SI) and compression-ignition (CI) engines.