Evaluation of Errors in Road Signs in a Long Roadwork Zone Using a Naturalistic Driving Study

Anton Pashkevich () and Jacek Bartusiak
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Anton Pashkevich: Department of Transportation Systems, Faculty of Civil Engineering, Politechnika Krakowska, ul. Warszawska 24, 31-155 Kraków, Poland
Jacek Bartusiak: Doctoral School, Politechnika Krakowska, ul. Warszawska 24, 31-155 Kraków, Poland

Sustainability, 2025, vol. 17, issue 8, 1-14

Abstract: The paper presents an application of a new, simple approach for the naturalistic assessment of road sign quality from a driver’s perspective, using dashboard camera recordings. This method was used to evaluate signage along a 69.6 km road construction zone in Poland associated with the phased upgrade of a dual carriageway with unlimited access into a motorway. The analysis focused on three distinct phases of the roadwork: the beginning of roadwork, the progress of roadwork, and finishing roadwork. The correctness, visibility, and quality of the road signs were assessed on a specially developed scale. The study found that 1135 road signs were unnecessary, which was equal to 36% of all signs. The majority of all signs (48.1%) indicated prohibition: more than one third (33.6%) of them were speed limit signs, of which 52% were posted without the need. It was demonstrated that the simple method applied in this study can be considered a useful tool to identify deficiencies in signage, which could ultimately improve road safety and make road management more sustainable. Moreover, this study confirmed again that the use of appropriate video recordings makes it faster and easier to conduct an inventory of road signs.

Keywords: road safety; temporary signage; erroneous signage; unnecessary signage; sustainable road management (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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