@ARTICLE{Olszewski_P._Ocena_2015, author={Olszewski, P. and Czajewski, W. and Dąbkowski, P. and Kraśkiewicz, C. and Szagała, P.}, number={No 2}, journal={Archives of Civil Engineering}, pages={125-139}, howpublished={online}, year={2015}, publisher={WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES}, abstract={The paper presents findings from research project Mobis which is aimed at developing a method of assessing safety of unsignalised pedestrian road crossings using video image analysis. Pedestrian and vehicle traffic has been recorded at selected zebra crossing sites in Warsaw and Wrocław, before and after installation of active signage systems SignFlash and Levelite. Speeds of approaching vehicles were measured and drivers’ behaviour was classified using video analysis. The paper presents a comparison of effectiveness of systems such as SignFlash and Levelite based on changes in the mean and standard deviation of vehicle spot speeds as well as changes in speed profiles of vehicles approaching the crossings. Results indicate that both SignFlash and Levelite active signage reduce mean vehicle approach speeds and have a positive impact on drivers’ behaviour.}, type={Artykuły / Articles}, title={Ocena skuteczności oznakowania aktywnego na przejściach dla pieszych}, title={Assessment of the effectiveness of active signage at pedestrian crossings}, URL={http://ochroma.man.poznan.pl/Content/84018/mainfile.pdf}, keywords={bezpieczeństwo pieszych, przejście dla pieszych, badania prędkości, SignFlash, Levelite, pedestrian safety, pedestrian crossing, speed survey, SignFlash, Levelite}, }