Print Email Facebook Twitter Analysis of Bicycle Headway Distribution, Saturation Flow and Capacity at a Signalized Intersection using Empirical Trajectory Data Title Analysis of Bicycle Headway Distribution, Saturation Flow and Capacity at a Signalized Intersection using Empirical Trajectory Data Author Yuan, Y. (TU Delft Transport and Planning) Goni Ros, B. (TU Delft Transport and Planning) Poppe, Mees (Student TU Delft) Daamen, W. (TU Delft Transport and Planning) Hoogendoorn, S.P. (TU Delft Transport and Planning) Department Transport and Planning Date 2019 Abstract Predicting the bicycle flow capacity at signalized intersections of various characteristics is crucial for urban infrastructure design and traffic management. However, it is also a difficult task because of the large heterogeneity in cycling behavior and several limitations of traditional capacity estimation methods. This paper proposes several methodological improvements, illustrates them using high-resolution trajectory data collected at a busy signalized intersection in the Netherlands, and investigates the influence of key variables of capacity estimation. More specifically, it shows that the (virtual) sublane width has a significant effect on the shape of the headway distribution at the stop line. Furthermore, a new method is proposed to calculate the saturation headway (a key variable determining capacity), which excludes the cyclists initially located close to the stop line using a distance-based rule instead of a fixed number (as is usually done in practice). It is also shown that the saturation headway is quite sensitive to the sublane width. Moreover, a new, empirically based method is proposed to identify the number of sublanes that can be accommodated in a given cycle path, which is another key influencing variable. This method yields considerably lower estimates of the number of sublanes than traditional methods, which rely solely on the (available) cycle path width. Finally, the authors show that methodological choices such as the sublane width and the method used to estimate the number of sublanes have a considerable effect on capacity estimates. Therefore, this paper highlights the need to define a sound methodology to estimate bicycle flow capacity at signalized intersections and proposes some steps to move toward that direction. To reference this document use: http://resolver.tudelft.nl/uuid:0386e5ab-14c8-481f-88be-7b3f078c1204 DOI https://doi.org/10.1177/0361198119839976 ISSN 0361-1981 Source Transportation Research Record, 2673 (6), 10-21 Part of collection Institutional Repository Document type journal article Rights © 2019 Y. Yuan, B. Goni Ros, Mees Poppe, W. Daamen, S.P. Hoogendoorn Files PDF 0361198119839976.pdf 1.33 MB Close viewer /islandora/object/uuid:0386e5ab-14c8-481f-88be-7b3f078c1204/datastream/OBJ/view