TY - JOUR N2 - The author investigated traffic flow quality on a new 2+1 long road bypass with an exceptionally high share of heavy vehicles in order to assess rational limits of heavy vehicle shares in traffic flow, dependent on the length of the 2+1 road and the number of passing segments in each direction. This paper presents the results of traffic flow quality analyses through the use of empirical and simulation methods for a single 2+1 road segment with additional passing lanes, as well as for the study of the entire section of the bypass – 2+1 road. Variables include analysis of travel speed distribution, platoon traffic, and amount of passing maneuvers. Results show that large passing demands lead to very high speeds (over 100 km/h) on segments with additional passing lanes. The conclusions include remarks related to the use and operation of 2+1 cross-sections with high shares of heavy vehicles. L1 - http://www.czasopisma.pan.pl/Content/103354/PDF/ace-2017-0028.pdf.pdf L2 - http://www.czasopisma.pan.pl/Content/103354 PY - 2017 IS - No 3 EP - 70 KW - 2+1 road KW - passing KW - overtaking KW - traffic performance KW - traffic flow KW - microsimulation model KW - travel speed KW - heavy vehicles A1 - Kieć, M. PB - WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES DA - 30.09.2017 T1 - Operation of 2+1 road with high shares of heavy vehicles SP - 53 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/103354 T2 - Archives of Civil Engineering ER -